90417078 has 24 divisors (see below), whose sum is σ = 197111928. Its totient is φ = 29953152.

The previous prime is 90417077. The next prime is 90417091. The reversal of 90417078 is 87071409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90417073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12475 + ... + 18342.

It is an arithmetic number, because the mean of its divisors is an integer number (8212997).

Almost surely, 2^90417078 is an apocalyptic number.

90417078 is an abundant number, since it is smaller than the sum of its proper divisors (106694850).

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

90417078 is a wasteful number, since it uses less digits than its factorization.

90417078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30988 (or 30985 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 90417078 is about 9508.7895128665. The cubic root of 90417078 is about 448.8316655763.

The spelling of 90417078 in words is "ninety million, four hundred seventeen thousand, seventy-eight".