28870074 has 16 divisors (see below), whose sum is σ = 64155840. Its totient is φ = 9623340.

The previous prime is 28870069. The next prime is 28870103. The reversal of 28870074 is 47007882.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267262 + ... + 267369.

It is an arithmetic number, because the mean of its divisors is an integer number (4009740).

Almost surely, 2^28870074 is an apocalyptic number.

28870074 is an abundant number, since it is smaller than the sum of its proper divisors (35285766).

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

28870074 is a wasteful number, since it uses less digits than its factorization.

28870074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534642 (or 534636 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 28870074 is about 5373.0879389789. The cubic root of 28870074 is about 306.7721751534.

The spelling of 28870074 in words is "twenty-eight million, eight hundred seventy thousand, seventy-four".