90678192 has 80 divisors (see below), whose sum is σ = 256912128. Its totient is φ = 27331840.

The previous prime is 90678139. The next prime is 90678197. The reversal of 90678192 is 29187609.

It is not an unprimeable number, because it can be changed into a prime (90678197) 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, 138538 + ... + 139190.

Almost surely, 2^90678192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90678192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128456064).

90678192 is an abundant number, since it is smaller than the sum of its proper divisors (166233936).

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

90678192 is a wasteful number, since it uses less digits than its factorization.

90678192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 90678192 is about 9522.5097532111. The cubic root of 90678192 is about 449.2633082055.

The spelling of 90678192 in words is "ninety million, six hundred seventy-eight thousand, one hundred ninety-two".