90486378 has 12 divisors (see below), whose sum is σ = 196053858. Its totient is φ = 30162120.

The previous prime is 90486371. The next prime is 90486391. The reversal of 90486378 is 87368409.

It is a happy number.

90486378 is a `hidden beast` number, since 9 + 0 + 4 + 8 + 637 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86434209 + 4052169 = 9297^2 + 2013^2 .

It is not an unprimeable number, because it can be changed into a prime (90486371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2513493 + ... + 2513528.

Almost surely, 2^90486378 is an apocalyptic number.

90486378 is an abundant number, since it is smaller than the sum of its proper divisors (105567480).

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

90486378 is a wasteful number, since it uses less digits than its factorization.

90486378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027029 (or 5027026 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 90486378 is about 9512.4328118521. The cubic root of 90486378 is about 448.9463050225.

The spelling of 90486378 in words is "ninety million, four hundred eighty-six thousand, three hundred seventy-eight".