90273492 has 18 divisors (see below), whose sum is σ = 228191418. Its totient is φ = 30091152.

The previous prime is 90273487. The next prime is 90273509. The reversal of 90273492 is 29437209.

It can be written as a sum of positive squares in only one way, i.e., 49364676 + 40908816 = 7026^2 + 6396^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2507597 = 90273492 / (9 + 0 + 2 + 7 + 3 + 4 + 9 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1253763 + ... + 1253834.

It is an arithmetic number, because the mean of its divisors is an integer number (12677301).

Almost surely, 2^90273492 is an apocalyptic number.

It is an amenable number.

90273492 is an abundant number, since it is smaller than the sum of its proper divisors (137917926).

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

90273492 is a wasteful number, since it uses less digits than its factorization.

90273492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507607 (or 2507602 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 90273492 is about 9501.2363406033. The cubic root of 90273492 is about 448.5939520479.

The spelling of 90273492 in words is "ninety million, two hundred seventy-three thousand, four hundred ninety-two".