212440374 has 32 divisors (see below), whose sum is σ = 492618240. Its totient is φ = 67734216.

The previous prime is 212440373. The next prime is 212440391. The reversal of 212440374 is 473044212.

212440374 is a `hidden beast` number, since 212 + 440 + 3 + 7 + 4 = 666.

212440374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212440373) 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, 84282 + ... + 86765.

It is an arithmetic number, because the mean of its divisors is an integer number (15394320).

Almost surely, 2^212440374 is an apocalyptic number.

212440374 is an abundant number, since it is smaller than the sum of its proper divisors (280177866).

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

212440374 is a wasteful number, since it uses less digits than its factorization.

212440374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171081 (or 171075 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 212440374 is about 14575.3344387016. The cubic root of 212440374 is about 596.6857769160.

Adding to 212440374 its reverse (473044212), we get a palindrome (685484586).

The spelling of 212440374 in words is "two hundred twelve million, four hundred forty thousand, three hundred seventy-four".