28442670 has 16 divisors (see below), whose sum is σ = 68262480. Its totient is φ = 7584704.

The previous prime is 28442669. The next prime is 28442681. The reversal of 28442670 is 7624482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474015 + ... + 474074.

It is an arithmetic number, because the mean of its divisors is an integer number (4266405).

Almost surely, 2^28442670 is an apocalyptic number.

28442670 is an abundant number, since it is smaller than the sum of its proper divisors (39819810).

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

28442670 is a wasteful number, since it uses less digits than its factorization.

28442670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948099.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 28442670 is about 5333.1669765722. The cubic root of 28442670 is about 305.2507836161.

The spelling of 28442670 in words is "twenty-eight million, four hundred forty-two thousand, six hundred seventy".