90435140 has 48 divisors (see below), whose sum is σ = 193983552. Its totient is φ = 35408256.

The previous prime is 90435131. The next prime is 90435151. The reversal of 90435140 is 4153409.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260447 + ... + 260793.

It is an arithmetic number, because the mean of its divisors is an integer number (4041324).

Almost surely, 2^90435140 is an apocalyptic number.

It is an amenable number.

90435140 is an abundant number, since it is smaller than the sum of its proper divisors (103548412).

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

90435140 is a wasteful number, since it uses less digits than its factorization.

90435140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 90435140 is about 9509.7392182962. The cubic root of 90435140 is about 448.8615502617.

Adding to 90435140 its reverse (4153409), we get a palindrome (94588549).

The spelling of 90435140 in words is "ninety million, four hundred thirty-five thousand, one hundred forty".