90422670 has 64 divisors (see below), whose sum is σ = 236081664. Its totient is φ = 22032000.

The previous prime is 90422669. The next prime is 90422687. The reversal of 90422670 is 7622409.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39045 + ... + 41295.

It is an arithmetic number, because the mean of its divisors is an integer number (3688776).

Almost surely, 2^90422670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90422670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118040832).

90422670 is an abundant number, since it is smaller than the sum of its proper divisors (145658994).

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

90422670 is a wasteful number, since it uses less digits than its factorization.

90422670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 90422670 is about 9509.0835520569. The cubic root of 90422670 is about 448.8409183081.

The spelling of 90422670 in words is "ninety million, four hundred twenty-two thousand, six hundred seventy".