722955840 has 56 divisors (see below), whose sum is σ = 2295387840. Its totient is φ = 192787968.

The previous prime is 722955809. The next prime is 722955853. The reversal of 722955840 is 48559227.

It is a junction number, because it is equal to n+sod(n) for n = 722955792 and 722955801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375580 + ... + 377499.

Almost surely, 2^722955840 is an apocalyptic number.

It is an amenable number.

722955840 is an abundant number, since it is smaller than the sum of its proper divisors (1572432000).

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

722955840 is a wasteful number, since it uses less digits than its factorization.

722955840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753099 (or 753089 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 722955840 is about 26887.8381429225. The cubic root of 722955840 is about 897.5057854030.

The spelling of 722955840 in words is "seven hundred twenty-two million, nine hundred fifty-five thousand, eight hundred forty".