90722710 has 32 divisors (see below), whose sum is σ = 186211872. Its totient is φ = 31526400.

The previous prime is 90722683. The next prime is 90722711. The reversal of 90722710 is 1722709.

It is a happy number.

It is a super-2 number, since 2×90722710² = 16461220219488200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90722711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18316 + ... + 22735.

It is an arithmetic number, because the mean of its divisors is an integer number (5819121).

Almost surely, 2^90722710 is an apocalyptic number.

90722710 is an abundant number, since it is smaller than the sum of its proper divisors (95489162).

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

90722710 is a wasteful number, since it uses less digits than its factorization.

90722710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41088.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 90722710 is about 9524.8469803982. The cubic root of 90722710 is about 449.3368173606.

The spelling of 90722710 in words is "ninety million, seven hundred twenty-two thousand, seven hundred ten".