212074156 has 24 divisors (see below), whose sum is σ = 432807200. Its totient is φ = 90888336.

The previous prime is 212074141. The next prime is 212074169. The reversal of 212074156 is 651470212.

It is a super-2 number, since 2×212074156² = 89950895286224672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75915 + ... + 78658.

Almost surely, 2^212074156 is an apocalyptic number.

It is an amenable number.

212074156 is an abundant number, since it is smaller than the sum of its proper divisors (220733044).

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

212074156 is a wasteful number, since it uses less digits than its factorization.

212074156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154598 (or 154582 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 212074156 is about 14562.7660834060. The cubic root of 212074156 is about 596.3427116242.

The spelling of 212074156 in words is "two hundred twelve million, seventy-four thousand, one hundred fifty-six".