90347390 has 32 divisors (see below), whose sum is σ = 187233984. Its totient is φ = 30746880.

The previous prime is 90347363. The next prime is 90347399. The reversal of 90347390 is 9374309.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90347390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90347399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4880 + ... + 14300.

It is an arithmetic number, because the mean of its divisors is an integer number (5851062).

Almost surely, 2^90347390 is an apocalyptic number.

90347390 is an abundant number, since it is smaller than the sum of its proper divisors (96886594).

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

90347390 is a wasteful number, since it uses less digits than its factorization.

90347390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9572.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 90347390 is about 9505.1244073920. The cubic root of 90347390 is about 448.7163251966.

The spelling of 90347390 in words is "ninety million, three hundred forty-seven thousand, three hundred ninety".