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28913352 = 2331392671
BaseRepresentation
bin110111001001…
…0111011001000
32000101221122220
41232102323020
524400211402
62511414040
7500521326
oct156227310
960357586
1028913352
1115359036
129824320
135cb44c0
143ba8d16
152811dbc
hex1b92ec8

28913352 has 32 divisors (see below), whose sum is σ = 77844480. Its totient is φ = 8896320.

The previous prime is 28913351. The next prime is 28913387. The reversal of 28913352 is 25331982.

It is not an unprimeable number, because it can be changed into a prime (28913351) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 46024 + ... + 46647.

It is an arithmetic number, because the mean of its divisors is an integer number (2432640).

Almost surely, 228913352 is an apocalyptic number.

It is an amenable number.

28913352 is an abundant number, since it is smaller than the sum of its proper divisors (48931128).

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

28913352 is a wasteful number, since it uses less digits than its factorization.

28913352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92693 (or 92689 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 28913352 is about 5377.1137239229. The cubic root of 28913352 is about 306.9253886809.

The spelling of 28913352 in words is "twenty-eight million, nine hundred thirteen thousand, three hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 92671 185342 278013 370684 556026 741368 1112052 1204723 2224104 2409446 3614169 4818892 7228338 9637784 14456676 28913352