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72942048 = 25322331087
BaseRepresentation
bin1000101100100…
…00000111100000
312002020211200100
410112100013200
5122133121143
611123222400
71543666014
oct426200740
9162224610
1072942048
11381a0493
1220517a00
131215b99a
14998a544
15660c6d3
hex45901e0

72942048 has 72 divisors (see below), whose sum is σ = 208510848. Its totient is φ = 24187392.

The previous prime is 72942041. The next prime is 72942049. The reversal of 72942048 is 84024927.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72942041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66561 + ... + 67647.

It is an arithmetic number, because the mean of its divisors is an integer number (2895984).

Almost surely, 272942048 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 72942048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104255424).

72942048 is an abundant number, since it is smaller than the sum of its proper divisors (135568800).

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

72942048 is a wasteful number, since it uses less digits than its factorization.

72942048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 72942048 is about 8540.6116876954. The cubic root of 72942048 is about 417.8232962660.

The spelling of 72942048 in words is "seventy-two million, nine hundred forty-two thousand, forty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 233 288 466 699 932 1087 1398 1864 2097 2174 2796 3261 3728 4194 4348 5592 6522 7456 8388 8696 9783 11184 13044 16776 17392 19566 22368 26088 33552 34784 39132 52176 67104 78264 104352 156528 253271 313056 506542 759813 1013084 1519626 2026168 2279439 3039252 4052336 4558878 6078504 8104672 9117756 12157008 18235512 24314016 36471024 72942048