28612940 has 12 divisors (see below), whose sum is σ = 60087216. Its totient is φ = 11445168.

The previous prime is 28612849. The next prime is 28612967. The reversal of 28612940 is 4921682.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28612897 and 28612906.

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, 715304 + ... + 715343.

It is an arithmetic number, because the mean of its divisors is an integer number (5007268).

Almost surely, 2^28612940 is an apocalyptic number.

28612940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28612940 is an abundant number, since it is smaller than the sum of its proper divisors (31474276).

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

28612940 is a wasteful number, since it uses less digits than its factorization.

28612940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430656 (or 1430654 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28612940 is about 5349.1064674392. The cubic root of 28612940 is about 305.8586927836.

The spelling of 28612940 in words is "twenty-eight million, six hundred twelve thousand, nine hundred forty".