28623552 has 56 divisors (see below), whose sum is σ = 77516736. Its totient is φ = 9316608.

The previous prime is 28623541. The next prime is 28623583. The reversal of 28623552 is 25532682.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6523 + ... + 9989.

Almost surely, 2^28623552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28623552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38758368).

28623552 is an abundant number, since it is smaller than the sum of its proper divisors (48893184).

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

28623552 is a wasteful number, since it uses less digits than its factorization.

28623552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3515 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 28623552 is about 5350.0983168536. The cubic root of 28623552 is about 305.8965005175.

The spelling of 28623552 in words is "twenty-eight million, six hundred twenty-three thousand, five hundred fifty-two".