28020124 has 12 divisors (see below), whose sum is σ = 53493048. Its totient is φ = 12736400.

The previous prime is 28020107. The next prime is 28020151. The reversal of 28020124 is 42102082.

It is a congruent number.

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, 318367 + ... + 318454.

It is an arithmetic number, because the mean of its divisors is an integer number (4457754).

Almost surely, 2^28020124 is an apocalyptic number.

It is an amenable number.

28020124 is a deficient number, since it is larger than the sum of its proper divisors (25472924).

28020124 is a wasteful number, since it uses less digits than its factorization.

28020124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636836 (or 636834 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 28020124 is about 5293.4038198498. The cubic root of 28020124 is about 303.7316277620.

The spelling of 28020124 in words is "twenty-eight million, twenty thousand, one hundred twenty-four".