7212381264 has 100 divisors (see below), whose sum is σ = 22772471040. Its totient is φ = 2185565760.

The previous prime is 7212381259. The next prime is 7212381277. The reversal of 7212381264 is 4621832127.

It is a happy number.

7212381264 is a `hidden beast` number, since 7 + 2 + 12 + 381 + 264 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 238704 + ... + 267215.

Almost surely, 2^7212381264 is an apocalyptic number.

It is an amenable number.

7212381264 is an abundant number, since it is smaller than the sum of its proper divisors (15560089776).

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

7212381264 is a wasteful number, since it uses less digits than its factorization.

7212381264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505950 (or 505935 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 7212381264 is about 84925.7397024012. The cubic root of 7212381264 is about 1932.0849852666.

The spelling of 7212381264 in words is "seven billion, two hundred twelve million, three hundred eighty-one thousand, two hundred sixty-four".