721362044 has 24 divisors (see below), whose sum is σ = 1368628800. Its totient is φ = 330698304.

The previous prime is 721362043. The next prime is 721362067. The reversal of 721362044 is 440263127.

It is a junction number, because it is equal to n+sod(n) for n = 721361998 and 721362016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721362043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38804 + ... + 54299.

It is an arithmetic number, because the mean of its divisors is an integer number (57026200).

Almost surely, 2^721362044 is an apocalyptic number.

It is an amenable number.

721362044 is a deficient number, since it is larger than the sum of its proper divisors (647266756).

721362044 is a wasteful number, since it uses less digits than its factorization.

721362044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93269 (or 93267 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 721362044 is about 26858.1839296703. The cubic root of 721362044 is about 896.8457664904.

The spelling of 721362044 in words is "seven hundred twenty-one million, three hundred sixty-two thousand, forty-four".