722427120 has 320 divisors, whose sum is σ = 2714112000. Its totient is φ = 175924224.

The previous prime is 722427119. The next prime is 722427127. The reversal of 722427120 is 21724227.

It is a super-2 number, since 2×722427120² = 1043801887422988800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722427127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1189857 + ... + 1190463.

It is an arithmetic number, because the mean of its divisors is an integer number (8481600).

Almost surely, 2^722427120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722427120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1357056000).

722427120 is an abundant number, since it is smaller than the sum of its proper divisors (1991684880).

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

722427120 is a wasteful number, since it uses less digits than its factorization.

722427120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 722427120 is about 26878.0043902072. The cubic root of 722427120 is about 897.2869407844.

The spelling of 722427120 in words is "seven hundred twenty-two million, four hundred twenty-seven thousand, one hundred twenty".