28258552 has 16 divisors (see below), whose sum is σ = 60554160. Its totient is φ = 12110784.

The previous prime is 28258543. The next prime is 28258583. The reversal of 28258552 is 25585282.

It is a super-2 number, since 2×28258552² = 1597091522273408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252253 + ... + 252364.

It is an arithmetic number, because the mean of its divisors is an integer number (3784635).

Almost surely, 2^28258552 is an apocalyptic number.

It is an amenable number.

28258552 is an abundant number, since it is smaller than the sum of its proper divisors (32295608).

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

28258552 is a wasteful number, since it uses less digits than its factorization.

28258552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504630 (or 504626 counting only the distinct ones).

The product of its digits is 64000, while the sum is 37.

The square root of 28258552 is about 5315.8773499771. The cubic root of 28258552 is about 304.5906970514.

The spelling of 28258552 in words is "twenty-eight million, two hundred fifty-eight thousand, five hundred fifty-two".