212461764 has 24 divisors (see below), whose sum is σ = 517298880. Its totient is φ = 67741344.

The previous prime is 212461763. The next prime is 212461771. The reversal of 212461764 is 467164212.

212461764 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212461763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384619 + ... + 385170.

It is an arithmetic number, because the mean of its divisors is an integer number (21554120).

Almost surely, 2^212461764 is an apocalyptic number.

It is an amenable number.

212461764 is an abundant number, since it is smaller than the sum of its proper divisors (304837116).

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

212461764 is a wasteful number, since it uses less digits than its factorization.

212461764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769819 (or 769817 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 212461764 is about 14576.0681941325. The cubic root of 212461764 is about 596.7058024259.

The spelling of 212461764 in words is "two hundred twelve million, four hundred sixty-one thousand, seven hundred sixty-four".