28934972 has 36 divisors (see below), whose sum is σ = 56128128. Its totient is φ = 13041600.

The previous prime is 28934951. The next prime is 28934977. The reversal of 28934972 is 27943982.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28934977) 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 11 ways as a sum of consecutive naturals, for example, 92288 + ... + 92600.

Almost surely, 2^28934972 is an apocalyptic number.

28934972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28934972 is a deficient number, since it is larger than the sum of its proper divisors (27193156).

28934972 is a wasteful number, since it uses less digits than its factorization.

28934972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 517 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 28934972 is about 5379.1237204586. The cubic root of 28934972 is about 307.0018709191.

The spelling of 28934972 in words is "twenty-eight million, nine hundred thirty-four thousand, nine hundred seventy-two".