28120352 has 48 divisors (see below), whose sum is σ = 62233920. Its totient is φ = 12410112.

The previous prime is 28120327. The next prime is 28120373. The reversal of 28120352 is 25302182.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 8099 + ... + 11037.

It is an arithmetic number, because the mean of its divisors is an integer number (1296540).

Almost surely, 2^28120352 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 28120352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31116960).

28120352 is an abundant number, since it is smaller than the sum of its proper divisors (34113568).

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

28120352 is a wasteful number, since it uses less digits than its factorization.

28120352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985 (or 2977 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 28120352 is about 5302.8626231499. The cubic root of 28120352 is about 304.0933462188.

The spelling of 28120352 in words is "twenty-eight million, one hundred twenty thousand, three hundred fifty-two".