211950864 has 40 divisors (see below), whose sum is σ = 608378720. Its totient is φ = 70650144.

The previous prime is 211950859. The next prime is 211950877. The reversal of 211950864 is 468059112.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244882 + ... + 245745.

It is an arithmetic number, because the mean of its divisors is an integer number (15209468).

Almost surely, 2^211950864 is an apocalyptic number.

211950864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211950864 is an abundant number, since it is smaller than the sum of its proper divisors (396427856).

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

211950864 is a wasteful number, since it uses less digits than its factorization.

211950864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490644 (or 490632 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 211950864 is about 14558.5323436121. The cubic root of 211950864 is about 596.2271254228.

The spelling of 211950864 in words is "two hundred eleven million, nine hundred fifty thousand, eight hundred sixty-four".