722392436 has 12 divisors (see below), whose sum is σ = 1307779620. Its totient is φ = 348741120.

The previous prime is 722392427. The next prime is 722392469. The reversal of 722392436 is 634293227.

It can be written as a sum of positive squares in 2 ways, for example, as 584188900 + 138203536 = 24170^2 + 11756^2 .

It is a super-3 number, since 3×722392436³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 722392436.

It is a congruent number.

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, 3113645 + ... + 3113876.

It is an arithmetic number, because the mean of its divisors is an integer number (108981635).

Almost surely, 2^722392436 is an apocalyptic number.

It is an amenable number.

722392436 is a deficient number, since it is larger than the sum of its proper divisors (585387184).

722392436 is a wasteful number, since it uses less digits than its factorization.

722392436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227554 (or 6227552 counting only the distinct ones).

The product of its digits is 108864, while the sum is 38.

The square root of 722392436 is about 26877.3591708709. The cubic root of 722392436 is about 897.2725808592.

The spelling of 722392436 in words is "seven hundred twenty-two million, three hundred ninety-two thousand, four hundred thirty-six".