722087520 has 288 divisors, whose sum is σ = 2887508736. Its totient is φ = 149990400.

The previous prime is 722087491. The next prime is 722087567. The reversal of 722087520 is 25780227.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 257325 + ... + 260115.

It is an arithmetic number, because the mean of its divisors is an integer number (10026072).

Almost surely, 2^722087520 is an apocalyptic number.

722087520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722087520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443754368).

722087520 is an abundant number, since it is smaller than the sum of its proper divisors (2165421216).

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

722087520 is a wasteful number, since it uses less digits than its factorization.

722087520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 722087520 is about 26871.6862143037. The cubic root of 722087520 is about 897.1463192616.

The spelling of 722087520 in words is "seven hundred twenty-two million, eighty-seven thousand, five hundred twenty".