722456420 has 48 divisors (see below), whose sum is σ = 1750764288. Its totient is φ = 245289600.

The previous prime is 722456419. The next prime is 722456431. The reversal of 722456420 is 24654227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10631 + ... + 39470.

It is an arithmetic number, because the mean of its divisors is an integer number (36474256).

Almost surely, 2^722456420 is an apocalyptic number.

722456420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

722456420 is an abundant number, since it is smaller than the sum of its proper divisors (1028307868).

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

722456420 is a wasteful number, since it uses less digits than its factorization.

722456420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50220 (or 50218 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 722456420 is about 26878.5494400275. The cubic root of 722456420 is about 897.2990712592.

The spelling of 722456420 in words is "seven hundred twenty-two million, four hundred fifty-six thousand, four hundred twenty".