40502180 has 12 divisors (see below), whose sum is σ = 85054620. Its totient is φ = 16200864.

The previous prime is 40502159. The next prime is 40502191. The reversal of 40502180 is 8120504.

It can be written as a sum of positive squares in 2 ways, for example, as 31114084 + 9388096 = 5578^2 + 3064^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 2025109 = 40502180 / (4 + 0 + 5 + 0 + 2 + 1 + 8 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012535 + ... + 1012574.

It is an arithmetic number, because the mean of its divisors is an integer number (7087885).

Almost surely, 2^40502180 is an apocalyptic number.

It is an amenable number.

40502180 is an abundant number, since it is smaller than the sum of its proper divisors (44552440).

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

40502180 is a wasteful number, since it uses less digits than its factorization.

40502180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025118 (or 2025116 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 40502180 is about 6364.1323053500. The cubic root of 40502180 is about 343.4204343272.

Adding to 40502180 its reverse (8120504), we get a palindrome (48622684).

The spelling of 40502180 in words is "forty million, five hundred two thousand, one hundred eighty".