28455384 has 32 divisors (see below), whose sum is σ = 71305920. Its totient is φ = 9462816.

The previous prime is 28455373. The next prime is 28455397. The reversal of 28455384 is 48355482.

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, 11419 + ... + 13685.

It is an arithmetic number, because the mean of its divisors is an integer number (2228310).

Almost surely, 2^28455384 is an apocalyptic number.

28455384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28455384 is an abundant number, since it is smaller than the sum of its proper divisors (42850536).

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

28455384 is a wasteful number, since it uses less digits than its factorization.

28455384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799 (or 2795 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

The square root of 28455384 is about 5334.3588180774. The cubic root of 28455384 is about 305.2962596601.

The spelling of 28455384 in words is "twenty-eight million, four hundred fifty-five thousand, three hundred eighty-four".