90250146 has 64 divisors (see below), whose sum is σ = 237139200. Its totient is φ = 24893568.

The previous prime is 90250109. The next prime is 90250169. The reversal of 90250146 is 64105209.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 6846 + ... + 15078.

It is an arithmetic number, because the mean of its divisors is an integer number (3705300).

Almost surely, 2^90250146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90250146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118569600).

90250146 is an abundant number, since it is smaller than the sum of its proper divisors (146889054).

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

90250146 is a wasteful number, since it uses less digits than its factorization.

90250146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280 (or 8274 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 90250146 is about 9500.0076842074. The cubic root of 90250146 is about 448.5552778032. Note that the first 3 decimals are identical.

The spelling of 90250146 in words is "ninety million, two hundred fifty thousand, one hundred forty-six".