28869670 has 16 divisors (see below), whose sum is σ = 52453008. Its totient is φ = 11439520.

The previous prime is 28869647. The next prime is 28869677. The reversal of 28869670 is 7696882.

It is a self number, because there is not a number n which added to its sum of digits gives 28869670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28869677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12421 + ... + 14560.

It is an arithmetic number, because the mean of its divisors is an integer number (3278313).

Almost surely, 2^28869670 is an apocalyptic number.

28869670 is a deficient number, since it is larger than the sum of its proper divisors (23583338).

28869670 is a wasteful number, since it uses less digits than its factorization.

28869670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27095.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 28869670 is about 5373.0503440783. The cubic root of 28869670 is about 306.7707441844.

The spelling of 28869670 in words is "twenty-eight million, eight hundred sixty-nine thousand, six hundred seventy".