40133640 has 32 divisors (see below), whose sum is σ = 120401280. Its totient is φ = 10702272.

The previous prime is 40133633. The next prime is 40133693. The reversal of 40133640 is 4633104.

It is a super-2 number, since 2×40133640² = 3221418119299200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167104 + ... + 167343.

It is an arithmetic number, because the mean of its divisors is an integer number (3762540).

Almost surely, 2^40133640 is an apocalyptic number.

40133640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40133640 is an abundant number, since it is smaller than the sum of its proper divisors (80267640).

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

40133640 is a wasteful number, since it uses less digits than its factorization.

40133640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334461 (or 334457 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 40133640 is about 6335.1116801521. Note that the first 3 decimals coincide. The cubic root of 40133640 is about 342.3756346027.

Adding to 40133640 its reverse (4633104), we get a palindrome (44766744).

The spelling of 40133640 in words is "forty million, one hundred thirty-three thousand, six hundred forty".