212840374 has 32 divisors (see below), whose sum is σ = 345417696. Its totient is φ = 97996800.

The previous prime is 212840363. The next prime is 212840399. The reversal of 212840374 is 473048212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530574 + ... + 530974.

It is an arithmetic number, because the mean of its divisors is an integer number (10794303).

Almost surely, 2^212840374 is an apocalyptic number.

212840374 is a deficient number, since it is larger than the sum of its proper divisors (132577322).

212840374 is a wasteful number, since it uses less digits than its factorization.

212840374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 212840374 is about 14589.0497977079. The cubic root of 212840374 is about 597.0600382743.

Adding to 212840374 its reverse (473048212), we get a palindrome (685888586).

The spelling of 212840374 in words is "two hundred twelve million, eight hundred forty thousand, three hundred seventy-four".