90474678 has 96 divisors (see below), whose sum is σ = 241643520. Its totient is φ = 24993360.

The previous prime is 90474677. The next prime is 90474679. The reversal of 90474678 is 87647409.

It is an interprime number because it is at equal distance from previous prime (90474677) and next prime (90474679).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90474677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81475 + ... + 82577.

It is an arithmetic number, because the mean of its divisors is an integer number (2517120).

Almost surely, 2^90474678 is an apocalyptic number.

90474678 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90474678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120821760).

90474678 is an abundant number, since it is smaller than the sum of its proper divisors (151168842).

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

90474678 is a wasteful number, since it uses less digits than its factorization.

90474678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 90474678 is about 9511.8178073384. The cubic root of 90474678 is about 448.9269544186.

The spelling of 90474678 in words is "ninety million, four hundred seventy-four thousand, six hundred seventy-eight".