28573420 has 12 divisors (see below), whose sum is σ = 60004224. Its totient is φ = 11429360.

The previous prime is 28573417. The next prime is 28573459. The reversal of 28573420 is 2437582.

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, 714316 + ... + 714355.

It is an arithmetic number, because the mean of its divisors is an integer number (5000352).

Almost surely, 2^28573420 is an apocalyptic number.

28573420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28573420 is an abundant number, since it is smaller than the sum of its proper divisors (31430804).

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

28573420 is a wasteful number, since it uses less digits than its factorization.

28573420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428680 (or 1428678 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 28573420 is about 5345.4111160883. The cubic root of 28573420 is about 305.7178112467.

The spelling of 28573420 in words is "twenty-eight million, five hundred seventy-three thousand, four hundred twenty".