166072812 has 24 divisors (see below), whose sum is σ = 388629696. Its totient is φ = 55196688.

The previous prime is 166072807. The next prime is 166072817. The reversal of 166072812 is 218270661.

166072812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166072807) and next prime (166072817).

It is not an unprimeable number, because it can be changed into a prime (166072817) 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, 15778 + ... + 24105.

It is an arithmetic number, because the mean of its divisors is an integer number (16192904).

Almost surely, 2^166072812 is an apocalyptic number.

166072812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166072812 is an abundant number, since it is smaller than the sum of its proper divisors (222556884).

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

166072812 is a wasteful number, since it uses less digits than its factorization.

166072812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40237 (or 40235 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 166072812 is about 12886.9240705453. The cubic root of 166072812 is about 549.6668086610. Note that the first 3 decimals are identical.

The spelling of 166072812 in words is "one hundred sixty-six million, seventy-two thousand, eight hundred twelve".