722215008 has 48 divisors (see below), whose sum is σ = 2106462960. Its totient is φ = 240738048.

The previous prime is 722215007. The next prime is 722215027. The reversal of 722215008 is 800512227.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722215001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417085 + ... + 418812.

It is an arithmetic number, because the mean of its divisors is an integer number (43884645).

Almost surely, 2^722215008 is an apocalyptic number.

It is an amenable number.

722215008 is an abundant number, since it is smaller than the sum of its proper divisors (1384247952).

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

722215008 is a wasteful number, since it uses less digits than its factorization.

722215008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835916 (or 835902 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 722215008 is about 26874.0582718725. The cubic root of 722215008 is about 897.1991146437.

The spelling of 722215008 in words is "seven hundred twenty-two million, two hundred fifteen thousand, eight".