28120074 has 32 divisors (see below), whose sum is σ = 61166016. Its totient is φ = 8582400.

The previous prime is 28120073. The next prime is 28120087. The reversal of 28120074 is 47002182.

It is not an unprimeable number, because it can be changed into a prime (28120073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49 + ... + 7499.

It is an arithmetic number, because the mean of its divisors is an integer number (1911438).

Almost surely, 2^28120074 is an apocalyptic number.

28120074 is an abundant number, since it is smaller than the sum of its proper divisors (33045942).

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

28120074 is a wasteful number, since it uses less digits than its factorization.

28120074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 28120074 is about 5302.8364108277. The cubic root of 28120074 is about 304.0923441186.

The spelling of 28120074 in words is "twenty-eight million, one hundred twenty thousand, seventy-four".