28474704 has 30 divisors (see below), whose sum is σ = 79690026. Its totient is φ = 9491520.

The previous prime is 28474703. The next prime is 28474717. The reversal of 28474704 is 40747482.

It can be written as a sum of positive squares in only one way, i.e., 19184400 + 9290304 = 4380^2 + 3048^2 .

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 (28474703) 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 5 ways as a sum of consecutive naturals, for example, 98727 + ... + 99014.

Almost surely, 2^28474704 is an apocalyptic number.

28474704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28474704 is an abundant number, since it is smaller than the sum of its proper divisors (51215322).

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

28474704 is a wasteful number, since it uses less digits than its factorization.

28474704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197755 (or 197746 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 28474704 is about 5336.1694126030. The cubic root of 28474704 is about 305.3653384366.

The spelling of 28474704 in words is "twenty-eight million, four hundred seventy-four thousand, seven hundred four".