90310340 has 24 divisors (see below), whose sum is σ = 194779032. Its totient is φ = 35147520.

The previous prime is 90310327. The next prime is 90310349. The reversal of 90310340 is 4301309.

It can be written as a sum of positive squares in 4 ways, for example, as 13957696 + 76352644 = 3736^2 + 8738^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (90310349) 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, 60281 + ... + 61760.

It is an arithmetic number, because the mean of its divisors is an integer number (8115793).

Almost surely, 2^90310340 is an apocalyptic number.

It is an amenable number.

90310340 is an abundant number, since it is smaller than the sum of its proper divisors (104468692).

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

90310340 is a wasteful number, since it uses less digits than its factorization.

90310340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122087 (or 122085 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 90310340 is about 9503.1752588280. The cubic root of 90310340 is about 448.6549797133.

Adding to 90310340 its reverse (4301309), we get a palindrome (94611649).

The spelling of 90310340 in words is "ninety million, three hundred ten thousand, three hundred forty".