28572304 has 10 divisors (see below), whose sum is σ = 55358870. Its totient is φ = 14286144.

The previous prime is 28572301. The next prime is 28572307. The reversal of 28572304 is 40327582.

It is an interprime number because it is at equal distance from previous prime (28572301) and next prime (28572307).

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 9909904 = 4320^2 + 3148^2 .

It is not an unprimeable number, because it can be changed into a prime (28572301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 892869 + ... + 892900.

It is an arithmetic number, because the mean of its divisors is an integer number (5535887).

Almost surely, 2^28572304 is an apocalyptic number.

It is an amenable number.

28572304 is a deficient number, since it is larger than the sum of its proper divisors (26786566).

28572304 is a wasteful number, since it uses less digits than its factorization.

28572304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785777 (or 1785771 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 28572304 is about 5345.3067264658. The cubic root of 28572304 is about 305.7138310264.

Adding to 28572304 its reverse (40327582), we get a palindrome (68899886).

The spelling of 28572304 in words is "twenty-eight million, five hundred seventy-two thousand, three hundred four".