90817722 has 24 divisors (see below), whose sum is σ = 197342964. Its totient is φ = 30184704.

The previous prime is 90817709. The next prime is 90817729. The reversal of 90817722 is 22771809.

It can be written as a sum of positive squares in 2 ways, for example, as 76370121 + 14447601 = 8739^2 + 3801^2 .

It is not an unprimeable number, because it can be changed into a prime (90817729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 793 + ... + 13500.

Almost surely, 2^90817722 is an apocalyptic number.

90817722 is an abundant number, since it is smaller than the sum of its proper divisors (106525242).

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

90817722 is a wasteful number, since it uses less digits than its factorization.

90817722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14654 (or 14651 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 90817722 is about 9529.8332619202. The cubic root of 90817722 is about 449.4936229893.

The spelling of 90817722 in words is "ninety million, eight hundred seventeen thousand, seven hundred twenty-two".