40158180 has 72 divisors (see below), whose sum is σ = 126340032. Its totient is φ = 10707552.

The previous prime is 40158179. The next prime is 40158193. The reversal of 40158180 is 8185104.

40158180 is a `hidden beast` number, since 4 + 0 + 1 + 581 + 80 = 666.

It is a super-2 number, since 2×40158180² = 3225358841824800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729 + ... + 8991.

Almost surely, 2^40158180 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 40158180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63170016).

40158180 is an abundant number, since it is smaller than the sum of its proper divisors (86181852).

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

40158180 is a wasteful number, since it uses less digits than its factorization.

40158180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8287 (or 8273 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 40158180 is about 6337.0482087483. The cubic root of 40158180 is about 342.4454030578.

The spelling of 40158180 in words is "forty million, one hundred fifty-eight thousand, one hundred eighty".