212407632828 has 48 divisors (see below), whose sum is σ = 569675652000. Its totient is φ = 68361076224.

The previous prime is 212407632803. The next prime is 212407632841. The reversal of 212407632828 is 828236704212.

212407632828 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 0 + 7 + 632 + 8 + 2 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33906133 + ... + 33912396.

It is an arithmetic number, because the mean of its divisors is an integer number (11868242750).

Almost surely, 2^212407632828 is an apocalyptic number.

It is an amenable number.

212407632828 is an abundant number, since it is smaller than the sum of its proper divisors (357268019172).

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

212407632828 is a wasteful number, since it uses less digits than its factorization.

212407632828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67818571 (or 67818563 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 212407632828 in words is "two hundred twelve billion, four hundred seven million, six hundred thirty-two thousand, eight hundred twenty-eight".