40180668 has 96 divisors (see below), whose sum is σ = 110826240. Its totient is φ = 11197440.

The previous prime is 40180663. The next prime is 40180669. The reversal of 40180668 is 86608104.

It is a super-2 number, since 2×40180668² = 3228972161852448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40180663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92580 + ... + 93012.

It is an arithmetic number, because the mean of its divisors is an integer number (1154440).

Almost surely, 2^40180668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40180668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55413120).

40180668 is an abundant number, since it is smaller than the sum of its proper divisors (70645572).

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

40180668 is a wasteful number, since it uses less digits than its factorization.

40180668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 40180668 is about 6338.8222880911. The cubic root of 40180668 is about 342.5093126209.

The spelling of 40180668 in words is "forty million, one hundred eighty thousand, six hundred sixty-eight".