90146970 has 48 divisors (see below), whose sum is σ = 237610152. Its totient is φ = 23708160.

The previous prime is 90146957. The next prime is 90146981. The reversal of 90146970 is 7964109.

It can be written as a sum of positive squares in 4 ways, for example, as 62678889 + 27468081 = 7917^2 + 5241^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 291 + ... + 13430.

Almost surely, 2^90146970 is an apocalyptic number.

90146970 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90146970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118805076).

90146970 is an abundant number, since it is smaller than the sum of its proper divisors (147463182).

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

90146970 is a wasteful number, since it uses less digits than its factorization.

90146970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13807 (or 13804 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 90146970 is about 9494.5758199090. The cubic root of 90146970 is about 448.3842797909.

The spelling of 90146970 in words is "ninety million, one hundred forty-six thousand, nine hundred seventy".