212990136 has 32 divisors (see below), whose sum is σ = 536058000. Its totient is φ = 70519040.

The previous prime is 212990111. The next prime is 212990147. The reversal of 212990136 is 631099212.

It is a junction number, because it is equal to n+sod(n) for n = 212990097 and 212990106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26205 + ... + 33356.

Almost surely, 2^212990136 is an apocalyptic number.

It is an amenable number.

212990136 is an abundant number, since it is smaller than the sum of its proper divisors (323067864).

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

212990136 is a wasteful number, since it uses less digits than its factorization.

212990136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59719 (or 59715 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 212990136 is about 14594.1815803422. The cubic root of 212990136 is about 597.2000429481.

The spelling of 212990136 in words is "two hundred twelve million, nine hundred ninety thousand, one hundred thirty-six".