722136312 has 24 divisors (see below), whose sum is σ = 1955786040. Its totient is φ = 240712080.

The previous prime is 722136307. The next prime is 722136323. The reversal of 722136312 is 213631227.

722136312 is a `hidden beast` number, since 7 + 2 + 21 + 3 + 631 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×722136312² = 1042961706217922688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5014764 + ... + 5014907.

It is an arithmetic number, because the mean of its divisors is an integer number (81491085).

Almost surely, 2^722136312 is an apocalyptic number.

722136312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

722136312 is an abundant number, since it is smaller than the sum of its proper divisors (1233649728).

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

722136312 is a wasteful number, since it uses less digits than its factorization.

722136312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10029683 (or 10029676 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 722136312 is about 26872.5940690511. The cubic root of 722136312 is about 897.1665257584.

Adding to 722136312 its reverse (213631227), we get a palindrome (935767539).

The spelling of 722136312 in words is "seven hundred twenty-two million, one hundred thirty-six thousand, three hundred twelve".