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28958932 = 2223314771
BaseRepresentation
bin110111001111…
…0000011010100
32000111021012001
41232132003110
524403141212
62512405044
7501101242
oct156360324
960437161
1028958932
111538a302
129846784
135ccc182
143bbb792
152820657
hex1b9e0d4

28958932 has 12 divisors (see below), whose sum is σ = 52881696. Its totient is φ = 13849880.

The previous prime is 28958893. The next prime is 28958947. The reversal of 28958932 is 23985982.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 157294 + ... + 157477.

It is an arithmetic number, because the mean of its divisors is an integer number (4406808).

Almost surely, 228958932 is an apocalyptic number.

It is an amenable number.

28958932 is a deficient number, since it is larger than the sum of its proper divisors (23922764).

28958932 is a wasteful number, since it uses less digits than its factorization.

28958932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314798 (or 314796 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 28958932 is about 5381.3503881461. The cubic root of 28958932 is about 307.0865865753.

It can be divided in two parts, 28958 and 932, that added together give a triangular number (29890 = T244).

The spelling of 28958932 in words is "twenty-eight million, nine hundred fifty-eight thousand, nine hundred thirty-two".

Divisors: 1 2 4 23 46 92 314771 629542 1259084 7239733 14479466 28958932