722493792 has 72 divisors (see below), whose sum is σ = 2058160104. Its totient is φ = 240413184.

The previous prime is 722493787. The next prime is 722493803. The reversal of 722493792 is 297394227.

722493792 is a `hidden beast` number, since 72 + 2 + 493 + 7 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194868 + ... + 198540.

It is an arithmetic number, because the mean of its divisors is an integer number (28585557).

Almost surely, 2^722493792 is an apocalyptic number.

722493792 is a gapful number since it is divisible by the number (72) 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 722493792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1029080052).

722493792 is an abundant number, since it is smaller than the sum of its proper divisors (1335666312).

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

722493792 is a wasteful number, since it uses less digits than its factorization.

722493792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372 (or 4361 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 722493792 is about 26879.2446322437. The cubic root of 722493792 is about 897.3145431418.

The spelling of 722493792 in words is "seven hundred twenty-two million, four hundred ninety-three thousand, seven hundred ninety-two".