30972286 has 16 divisors (see below), whose sum is σ = 48775680. Its totient is φ = 14730840.

The previous prime is 30972281. The next prime is 30972287. The reversal of 30972286 is 68227903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30972281) 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, 576 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (3048480).

Almost surely, 2^30972286 is an apocalyptic number.

30972286 is a deficient number, since it is larger than the sum of its proper divisors (17803394).

30972286 is a wasteful number, since it uses less digits than its factorization.

30972286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 30972286 is about 5565.2750156663. The cubic root of 30972286 is about 314.0444241851.

The spelling of 30972286 in words is "thirty million, nine hundred seventy-two thousand, two hundred eighty-six".