211406464 has 32 divisors (see below), whose sum is σ = 443332800. Its totient is φ = 100138752.

The previous prime is 211406443. The next prime is 211406471. The reversal of 211406464 is 464604112.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41032 + ... + 45895.

It is an arithmetic number, because the mean of its divisors is an integer number (13854150).

Almost surely, 2^211406464 is an apocalyptic number.

It is an amenable number.

211406464 is an abundant number, since it is smaller than the sum of its proper divisors (231926336).

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

211406464 is an equidigital number, since it uses as much as digits as its factorization.

211406464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86960 (or 86948 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 211406464 is about 14539.8233826962. The cubic root of 211406464 is about 595.7162140099.

The spelling of 211406464 in words is "two hundred eleven million, four hundred six thousand, four hundred sixty-four".