28130242 has 32 divisors (see below), whose sum is σ = 50688000. Its totient is φ = 11447568.

The previous prime is 28130231. The next prime is 28130251. The reversal of 28130242 is 24203182.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63859 + ... + 64297.

It is an arithmetic number, because the mean of its divisors is an integer number (1584000).

Almost surely, 2^28130242 is an apocalyptic number.

28130242 is a deficient number, since it is larger than the sum of its proper divisors (22557758).

28130242 is a wasteful number, since it uses less digits than its factorization.

28130242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28130242 is about 5303.7950563724. The cubic root of 28130242 is about 304.1289921770.

The spelling of 28130242 in words is "twenty-eight million, one hundred thirty thousand, two hundred forty-two".