28723708 has 12 divisors (see below), whose sum is σ = 54133240. Its totient is φ = 13257072.

The previous prime is 28723703. The next prime is 28723733. The reversal of 28723708 is 80732782.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28723703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276138 + ... + 276241.

Almost surely, 2^28723708 is an apocalyptic number.

It is an amenable number.

28723708 is a deficient number, since it is larger than the sum of its proper divisors (25409532).

28723708 is a wasteful number, since it uses less digits than its factorization.

28723708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552396 (or 552394 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 28723708 is about 5359.4503449514. The cubic root of 28723708 is about 306.2528702771.

The spelling of 28723708 in words is "twenty-eight million, seven hundred twenty-three thousand, seven hundred eight".