17972812 has 36 divisors (see below), whose sum is σ = 37169496. Its totient is φ = 7537920.

The previous prime is 17972789. The next prime is 17972813. The reversal of 17972812 is 21827971.

It is not an unprimeable number, because it can be changed into a prime (17972813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6228 + ... + 8644.

It is an arithmetic number, because the mean of its divisors is an integer number (1032486).

Almost surely, 2^17972812 is an apocalyptic number.

It is an amenable number.

17972812 is an abundant number, since it is smaller than the sum of its proper divisors (19196684).

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

17972812 is a wasteful number, since it uses less digits than its factorization.

17972812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458 (or 2443 counting only the distinct ones).

The product of its digits is 14112, while the sum is 37.

The square root of 17972812 is about 4239.4353397593. The cubic root of 17972812 is about 261.9421234550.

The spelling of 17972812 in words is "seventeen million, nine hundred seventy-two thousand, eight hundred twelve".