28672704 has 70 divisors (see below), whose sum is σ = 85010244. Its totient is φ = 9555840.

The previous prime is 28672681. The next prime is 28672741. The reversal of 28672704 is 40727682.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2419 + ... + 7949.

Almost surely, 2^28672704 is an apocalyptic number.

28672704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28672704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42505122).

28672704 is an abundant number, since it is smaller than the sum of its proper divisors (56337540).

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

28672704 is an equidigital number, since it uses as much as digits as its factorization.

28672704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555 (or 5536 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 28672704 is about 5354.6899069881. The cubic root of 28672704 is about 306.0714942520.

The spelling of 28672704 in words is "twenty-eight million, six hundred seventy-two thousand, seven hundred four".