28326520 has 16 divisors (see below), whose sum is σ = 63734760. Its totient is φ = 11330592.

The previous prime is 28326503. The next prime is 28326553. The reversal of 28326520 is 2562382.

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, 354042 + ... + 354121.

Almost surely, 2^28326520 is an apocalyptic number.

28326520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28326520 is an abundant number, since it is smaller than the sum of its proper divisors (35408240).

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

28326520 is a wasteful number, since it uses less digits than its factorization.

28326520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708174 (or 708170 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 28326520 is about 5322.2664345183. The cubic root of 28326520 is about 304.8347039476.

The spelling of 28326520 in words is "twenty-eight million, three hundred twenty-six thousand, five hundred twenty".