90158772 has 24 divisors (see below), whose sum is σ = 229495392. Its totient is φ = 27320800.

The previous prime is 90158759. The next prime is 90158779. The reversal of 90158772 is 27785109.

It is a self number, because there is not a number n which added to its sum of digits gives 90158772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90158779) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 341379 + ... + 341642.

It is an arithmetic number, because the mean of its divisors is an integer number (9562308).

Almost surely, 2^90158772 is an apocalyptic number.

It is an amenable number.

90158772 is an abundant number, since it is smaller than the sum of its proper divisors (139336620).

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

90158772 is a wasteful number, since it uses less digits than its factorization.

90158772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683039 (or 683037 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 90158772 is about 9495.1973123258. The cubic root of 90158772 is about 448.4038463586.

The spelling of 90158772 in words is "ninety million, one hundred fifty-eight thousand, seven hundred seventy-two".