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28073952 = 253410831
BaseRepresentation
bin110101100010…
…1111111100000
31221211022020000
41223011333200
524141331302
62441420000
7460424154
oct153057740
957738200
1028073952
1114935415
12949a600
135a7c40a
143a2b064
1526e831c
hex1ac5fe0

28073952 has 60 divisors (see below), whose sum is σ = 82572336. Its totient is φ = 9357120.

The previous prime is 28073951. The next prime is 28073957. The reversal of 28073952 is 25937082.

It is a happy number.

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 (28073951) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2824 + ... + 8007.

Almost surely, 228073952 is an apocalyptic number.

It is an amenable number.

28073952 is an abundant number, since it is smaller than the sum of its proper divisors (54498384).

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

28073952 is a wasteful number, since it uses less digits than its factorization.

28073952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10853 (or 10836 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 28073952 is about 5298.4858214399. The cubic root of 28073952 is about 303.9259976843.

The spelling of 28073952 in words is "twenty-eight million, seventy-three thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 81 96 108 144 162 216 288 324 432 648 864 1296 2592 10831 21662 32493 43324 64986 86648 97479 129972 173296 194958 259944 292437 346592 389916 519888 584874 779832 877311 1039776 1169748 1559664 1754622 2339496 3119328 3509244 4678992 7018488 9357984 14036976 28073952