721048922 has 12 divisors (see below), whose sum is σ = 1188837258. Its totient is φ = 327749400.

The previous prime is 721048901. The next prime is 721048943. The reversal of 721048922 is 229840127.

It is an interprime number because it is at equal distance from previous prime (721048901) and next prime (721048943).

It can be written as a sum of positive squares in only one way, i.e., 679071481 + 41977441 = 26059^2 + 6479^2 .

It is a zygodrome in base 4.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1489529 + ... + 1490012.

Almost surely, 2^721048922 is an apocalyptic number.

721048922 is a deficient number, since it is larger than the sum of its proper divisors (467788336).

721048922 is a wasteful number, since it uses less digits than its factorization.

721048922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979565 (or 2979554 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 721048922 is about 26852.3541239870. The cubic root of 721048922 is about 896.7159829398.

The spelling of 721048922 in words is "seven hundred twenty-one million, forty-eight thousand, nine hundred twenty-two".