212397402 has 32 divisors (see below), whose sum is σ = 489036672. Its totient is φ = 60240384.

The previous prime is 212397401. The next prime is 212397403. The reversal of 212397402 is 204793212.

It is an interprime number because it is at equal distance from previous prime (212397401) and next prime (212397403).

It is a super-2 number, since 2×212397402² = 90225312752699208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212397402.

It is not an unprimeable number, because it can be changed into a prime (212397401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12703 + ... + 24210.

It is an arithmetic number, because the mean of its divisors is an integer number (15282396).

Almost surely, 2^212397402 is an apocalyptic number.

212397402 is an abundant number, since it is smaller than the sum of its proper divisors (276639270).

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

212397402 is a wasteful number, since it uses less digits than its factorization.

212397402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37062.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 212397402 is about 14573.8602298773. The cubic root of 212397402 is about 596.6455420809.

The spelling of 212397402 in words is "two hundred twelve million, three hundred ninety-seven thousand, four hundred two".