90238064 has 40 divisors (see below), whose sum is σ = 201305568. Its totient is φ = 38384640.

The previous prime is 90238063. The next prime is 90238067. The reversal of 90238064 is 46083209.

It is a self number, because there is not a number n which added to its sum of digits gives 90238064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90238063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12404 + ... + 18284.

Almost surely, 2^90238064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90238064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100652784).

90238064 is an abundant number, since it is smaller than the sum of its proper divisors (111067504).

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

90238064 is a wasteful number, since it uses less digits than its factorization.

90238064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6033 (or 6027 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 90238064 is about 9499.3717687013. The cubic root of 90238064 is about 448.5352605254.

The spelling of 90238064 in words is "ninety million, two hundred thirty-eight thousand, sixty-four".