40135660 has 12 divisors (see below), whose sum is σ = 84284928. Its totient is φ = 16054256.

The previous prime is 40135651. The next prime is 40135663. The reversal of 40135660 is 6653104.

It is a super-2 number, since 2×40135660² = 3221742407271200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40135663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003372 + ... + 1003411.

It is an arithmetic number, because the mean of its divisors is an integer number (7023744).

Almost surely, 2^40135660 is an apocalyptic number.

It is an amenable number.

40135660 is an abundant number, since it is smaller than the sum of its proper divisors (44149268).

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

40135660 is a wasteful number, since it uses less digits than its factorization.

40135660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006792 (or 2006790 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 40135660 is about 6335.2711070640. The cubic root of 40135660 is about 342.3813786384.

Adding to 40135660 its reverse (6653104), we get a palindrome (46788764).

The spelling of 40135660 in words is "forty million, one hundred thirty-five thousand, six hundred sixty".