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72020960 = 25511151271
BaseRepresentation
bin1000100101011…
…11001111100000
312000112001011222
410102233033200
5121414132320
611051354212
71533111434
oct422571740
9160461158
1072020960
1137721460
1220152968
1311bc866b
1497ca9c4
1564c9825
hex44af3e0

72020960 has 96 divisors (see below), whose sum is σ = 187536384. Its totient is φ = 25920000.

The previous prime is 72020957. The next prime is 72020983. The reversal of 72020960 is 6902027.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265625 + ... + 265895.

It is an arithmetic number, because the mean of its divisors is an integer number (1953504).

Almost surely, 272020960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72020960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93768192).

72020960 is an abundant number, since it is smaller than the sum of its proper divisors (115515424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72020960 is a wasteful number, since it uses less digits than its factorization.

72020960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 72020960 is about 8486.5163642098. The cubic root of 72020960 is about 416.0571297279.

Adding to 72020960 its reverse (6902027), we get a palindrome (78922987).

The spelling of 72020960 in words is "seventy-two million, twenty thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 151 160 176 220 271 302 352 440 542 604 755 880 1084 1208 1355 1510 1661 1760 2168 2416 2710 2981 3020 3322 4336 4832 5420 5962 6040 6644 8305 8672 10840 11924 12080 13288 14905 16610 21680 23848 24160 26576 29810 33220 40921 43360 47696 53152 59620 66440 81842 95392 119240 132880 163684 204605 238480 265760 327368 409210 450131 476960 654736 818420 900262 1309472 1636840 1800524 2250655 3273680 3601048 4501310 6547360 7202096 9002620 14404192 18005240 36010480 72020960