721744022 has 8 divisors (see below), whose sum is σ = 1082933400. Its totient is φ = 360766224.

The previous prime is 721744021. The next prime is 721744031. The reversal of 721744022 is 220447127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721744021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 44072 + ... + 58187.

It is an arithmetic number, because the mean of its divisors is an integer number (135366675).

Almost surely, 2^721744022 is an apocalyptic number.

721744022 is a deficient number, since it is larger than the sum of its proper divisors (361189378).

721744022 is a wasteful number, since it uses less digits than its factorization.

721744022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105790.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 721744022 is about 26865.2940054636. The cubic root of 721744022 is about 897.0040387965.

The spelling of 721744022 in words is "seven hundred twenty-one million, seven hundred forty-four thousand, twenty-two".