722443920 has 80 divisors (see below), whose sum is σ = 2443182912. Its totient is φ = 175137280.

The previous prime is 722443919. The next prime is 722443963. The reversal of 722443920 is 29344227.

722443920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134187 + ... + 139466.

Almost surely, 2^722443920 is an apocalyptic number.

It is an amenable number.

722443920 is an abundant number, since it is smaller than the sum of its proper divisors (1720738992).

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

722443920 is a wasteful number, since it uses less digits than its factorization.

722443920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273680 (or 273674 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 722443920 is about 26878.3169115925. The cubic root of 722443920 is about 897.2938961821.

The spelling of 722443920 in words is "seven hundred twenty-two million, four hundred forty-three thousand, nine hundred twenty".