722956290 has 96 divisors (see below), whose sum is σ = 2032366464. Its totient is φ = 164102400.

The previous prime is 722956277. The next prime is 722956319. The reversal of 722956290 is 92659227.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220342 + ... + 223598.

It is an arithmetic number, because the mean of its divisors is an integer number (21170484).

Almost surely, 2^722956290 is an apocalyptic number.

722956290 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 722956290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016183232).

722956290 is an abundant number, since it is smaller than the sum of its proper divisors (1309410174).

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

722956290 is a wasteful number, since it uses less digits than its factorization.

722956290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432 (or 3425 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 722956290 is about 26887.8465110168. The cubic root of 722956290 is about 897.5059716189.

The spelling of 722956290 in words is "seven hundred twenty-two million, nine hundred fifty-six thousand, two hundred ninety".