28320948 has 24 divisors (see below), whose sum is σ = 73424960. Its totient is φ = 9440280.

The previous prime is 28320899. The next prime is 28320953. The reversal of 28320948 is 84902382.

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

It is a congruent number.

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, 131008 + ... + 131223.

Almost surely, 2^28320948 is an apocalyptic number.

It is an amenable number.

28320948 is an abundant number, since it is smaller than the sum of its proper divisors (45104012).

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

28320948 is a wasteful number, since it uses less digits than its factorization.

28320948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262244 (or 262236 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28320948 is about 5321.7429475690. The cubic root of 28320948 is about 304.8147150190.

The spelling of 28320948 in words is "twenty-eight million, three hundred twenty thousand, nine hundred forty-eight".