212839974 has 20 divisors (see below), whose sum is σ = 476919564. Its totient is φ = 70946604.

The previous prime is 212839969. The next prime is 212840053. The reversal of 212839974 is 479938212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 656752 + ... + 657075.

Almost surely, 2^212839974 is an apocalyptic number.

212839974 is an abundant number, since it is smaller than the sum of its proper divisors (264079590).

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

212839974 is a wasteful number, since it uses less digits than its factorization.

212839974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313841 (or 1313832 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 212839974 is about 14589.0360887894. The cubic root of 212839974 is about 597.0596642473.

The spelling of 212839974 in words is "two hundred twelve million, eight hundred thirty-nine thousand, nine hundred seventy-four".