90169750 has 32 divisors (see below), whose sum is σ = 184148640. Its totient is φ = 32788000.

The previous prime is 90169741. The next prime is 90169757. The reversal of 90169750 is 5796109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90169757) 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, 13645 + ... + 19144.

It is an arithmetic number, because the mean of its divisors is an integer number (5754645).

Almost surely, 2^90169750 is an apocalyptic number.

90169750 is an abundant number, since it is smaller than the sum of its proper divisors (93978890).

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

90169750 is a wasteful number, since it uses less digits than its factorization.

90169750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32817 (or 32807 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 90169750 is about 9495.7753764503. The cubic root of 90169750 is about 448.4220452815.

The spelling of 90169750 in words is "ninety million, one hundred sixty-nine thousand, seven hundred fifty".