211664352 has 48 divisors (see below), whose sum is σ = 556899840. Its totient is φ = 70392192.

The previous prime is 211664347. The next prime is 211664357. The reversal of 211664352 is 253466112.

It is an interprime number because it is at equal distance from previous prime (211664347) and next prime (211664357).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211664357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43683 + ... + 48285.

It is an arithmetic number, because the mean of its divisors is an integer number (11602080).

Almost surely, 2^211664352 is an apocalyptic number.

It is an amenable number.

211664352 is an abundant number, since it is smaller than the sum of its proper divisors (345235488).

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

211664352 is a wasteful number, since it uses less digits than its factorization.

211664352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095 (or 5087 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 211664352 is about 14548.6890131036. The cubic root of 211664352 is about 595.9583473135.

The spelling of 211664352 in words is "two hundred eleven million, six hundred sixty-four thousand, three hundred fifty-two".