28694870 has 16 divisors (see below), whose sum is σ = 51801120. Its totient is φ = 11444544.

The previous prime is 28694849. The next prime is 28694899. The reversal of 28694870 is 7849682.

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, 407 + ... + 7586.

It is an arithmetic number, because the mean of its divisors is an integer number (3237570).

Almost surely, 2^28694870 is an apocalyptic number.

28694870 is a deficient number, since it is larger than the sum of its proper divisors (23106250).

28694870 is a wasteful number, since it uses less digits than its factorization.

28694870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8359.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 28694870 is about 5356.7592815059. The cubic root of 28694870 is about 306.1503454738.

The spelling of 28694870 in words is "twenty-eight million, six hundred ninety-four thousand, eight hundred seventy".