212064156 has 72 divisors (see below), whose sum is σ = 561375360. Its totient is φ = 69993072.

The previous prime is 212064143. The next prime is 212064169. The reversal of 212064156 is 651460212.

212064156 is a `hidden beast` number, since 2 + 12 + 0 + 641 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (212064143) and next prime (212064169).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102985 + ... + 105023.

It is an arithmetic number, because the mean of its divisors is an integer number (7796880).

Almost surely, 2^212064156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212064156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280687680).

212064156 is an abundant number, since it is smaller than the sum of its proper divisors (349311204).

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

212064156 is a wasteful number, since it uses less digits than its factorization.

212064156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 212064156 is about 14562.4227379925. The cubic root of 212064156 is about 596.3333382978. Note that the first 5 decimals are identical.

The spelling of 212064156 in words is "two hundred twelve million, sixty-four thousand, one hundred fifty-six".