28607004 has 36 divisors (see below), whose sum is σ = 72893184. Its totient is φ = 9459072.

The previous prime is 28606993. The next prime is 28607023. The reversal of 28607004 is 40070682.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1444 + ... + 7700.

Almost surely, 2^28607004 is an apocalyptic number.

It is an amenable number.

28607004 is an abundant number, since it is smaller than the sum of its proper divisors (44286180).

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

28607004 is a wasteful number, since it uses less digits than its factorization.

28607004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394 (or 6389 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28607004 is about 5348.5515796335. The cubic root of 28607004 is about 305.8375403170.

Adding to 28607004 its reverse (40070682), we get a palindrome (68677686).

The spelling of 28607004 in words is "twenty-eight million, six hundred seven thousand, four".