722520460 has 48 divisors (see below), whose sum is σ = 1561462560. Its totient is φ = 280627200.

The previous prime is 722520439. The next prime is 722520499. The reversal of 722520460 is 64025227.

It is a super-2 number, since 2×722520460² = 1044071630237223200, which contains 22 as substring.

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, 686935 + ... + 687985.

It is an arithmetic number, because the mean of its divisors is an integer number (32530470).

Almost surely, 2^722520460 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 722520460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (780731280).

722520460 is an abundant number, since it is smaller than the sum of its proper divisors (838942100).

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

722520460 is a wasteful number, since it uses less digits than its factorization.

722520460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 722520460 is about 26879.7406981541. The cubic root of 722520460 is about 897.3255832781.

Adding to 722520460 its reverse (64025227), we get a palindrome (786545687).

The spelling of 722520460 in words is "seven hundred twenty-two million, five hundred twenty thousand, four hundred sixty".