90452730 has 64 divisors (see below), whose sum is σ = 235929600. Its totient is φ = 22109760.

The previous prime is 90452729. The next prime is 90452737. The reversal of 90452730 is 3725409.

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

It is not an unprimeable number, because it can be changed into a prime (90452737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15111 + ... + 20229.

It is an arithmetic number, because the mean of its divisors is an integer number (3686400).

Almost surely, 2^90452730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90452730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117964800).

90452730 is an abundant number, since it is smaller than the sum of its proper divisors (145476870).

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

90452730 is a wasteful number, since it uses less digits than its factorization.

90452730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 90452730 is about 9510.6640146732. The cubic root of 90452730 is about 448.8906501699.

The spelling of 90452730 in words is "ninety million, four hundred fifty-two thousand, seven hundred thirty".