723972722 has 32 divisors (see below), whose sum is σ = 1199124864. Its totient is φ = 325094400.

The previous prime is 723972709. The next prime is 723972731. The reversal of 723972722 is 227279327.

It is a self number, because there is not a number n which added to its sum of digits gives 723972722.

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, 708572 + ... + 709592.

It is an arithmetic number, because the mean of its divisors is an integer number (37472652).

Almost surely, 2^723972722 is an apocalyptic number.

723972722 is a deficient number, since it is larger than the sum of its proper divisors (475152142).

723972722 is a wasteful number, since it uses less digits than its factorization.

723972722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394.

The product of its digits is 148176, while the sum is 41.

The square root of 723972722 is about 26906.7411999298. The cubic root of 723972722 is about 897.9263873534.

The spelling of 723972722 in words is "seven hundred twenty-three million, nine hundred seventy-two thousand, seven hundred twenty-two".