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1445100340 = 2253114915643
BaseRepresentation
bin101011000100010…
…0111101100110100
310201201012200222211
41112020213230310
510424421202330
6355221303204
750545102345
oct12610475464
93651180884
101445100340
116817a3302
12343b64b04
131a050c978
14d9cd20cc
1586d02d2a
hex56227b34

1445100340 has 48 divisors (see below), whose sum is σ = 3153830400. Its totient is φ = 555603840.

The previous prime is 1445100329. The next prime is 1445100341. The reversal of 1445100340 is 430015441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445100341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84559 + ... + 100201.

It is an arithmetic number, because the mean of its divisors is an integer number (65704800).

Almost surely, 21445100340 is an apocalyptic number.

1445100340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1445100340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576915200).

1445100340 is an abundant number, since it is smaller than the sum of its proper divisors (1708730060).

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

1445100340 is a wasteful number, since it uses less digits than its factorization.

1445100340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15832 (or 15830 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1445100340 is about 38014.4754008259. The cubic root of 1445100340 is about 1130.5748869481.

Adding to 1445100340 its reverse (430015441), we get a palindrome (1875115781).

The spelling of 1445100340 in words is "one billion, four hundred forty-five million, one hundred thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 31 62 124 149 155 298 310 596 620 745 1490 2980 4619 9238 15643 18476 23095 31286 46190 62572 78215 92380 156430 312860 484933 969866 1939732 2330807 2424665 4661614 4849330 9323228 9698660 11654035 23308070 46616140 72255017 144510034 289020068 361275085 722550170 1445100340