722492784 has 400 divisors, whose sum is σ = 2474459680. Its totient is φ = 201553920.

The previous prime is 722492761. The next prime is 722492801. The reversal of 722492784 is 487294227.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11844114 + ... + 11844174.

Almost surely, 2^722492784 is an apocalyptic number.

722492784 is a gapful number since it is divisible by the number (74) 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 722492784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1237229840).

722492784 is an abundant number, since it is smaller than the sum of its proper divisors (1751966896).

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

722492784 is a wasteful number, since it uses less digits than its factorization.

722492784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 135 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 722492784 is about 26879.2258817102. The cubic root of 722492784 is about 897.3141258402.

The spelling of 722492784 in words is "seven hundred twenty-two million, four hundred ninety-two thousand, seven hundred eighty-four".