212513974 has 32 divisors (see below), whose sum is σ = 370759680. Its totient is φ = 90617472.

The previous prime is 212513971. The next prime is 212513981. The reversal of 212513974 is 479315212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212513971) 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, 7707 + ... + 22009.

It is an arithmetic number, because the mean of its divisors is an integer number (11586240).

Almost surely, 2^212513974 is an apocalyptic number.

212513974 is a deficient number, since it is larger than the sum of its proper divisors (158245706).

212513974 is a wasteful number, since it uses less digits than its factorization.

212513974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14364.

The product of its digits is 15120, while the sum is 34.

The square root of 212513974 is about 14577.8590334795. The cubic root of 212513974 is about 596.7546762527.

The spelling of 212513974 in words is "two hundred twelve million, five hundred thirteen thousand, nine hundred seventy-four".