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28072352 = 2571111393
BaseRepresentation
bin110101100010…
…1100110100000
31221211020000202
41223011212200
524141303402
62441404332
7460416410
oct153054640
957736022
1028072352
11149341a0
1294996a8
135a7b779
143a2a640
1526e7b02
hex1ac59a0

28072352 has 48 divisors (see below), whose sum is σ = 68910912. Its totient is φ = 10936320.

The previous prime is 28072339. The next prime is 28072361. The reversal of 28072352 is 25327082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3233 + ... + 8160.

It is an arithmetic number, because the mean of its divisors is an integer number (1435644).

Almost surely, 228072352 is an apocalyptic number.

28072352 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28072352 is an abundant number, since it is smaller than the sum of its proper divisors (40838560).

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

28072352 is a wasteful number, since it uses less digits than its factorization.

28072352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11421 (or 11413 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28072352 is about 5298.3348327564. The cubic root of 28072352 is about 303.9202237575.

The spelling of 28072352 in words is "twenty-eight million, seventy-two thousand, three hundred fifty-two".

Divisors: 1 2 4 7 8 11 14 16 22 28 32 44 56 77 88 112 154 176 224 308 352 616 1232 2464 11393 22786 45572 79751 91144 125323 159502 182288 250646 319004 364576 501292 638008 877261 1002584 1276016 1754522 2005168 2552032 3509044 4010336 7018088 14036176 28072352