40180880 has 20 divisors (see below), whose sum is σ = 93420732. Its totient is φ = 16072320.

The previous prime is 40180871. The next prime is 40180937. The reversal of 40180880 is 8808104.

It can be written as a sum of positive squares in 2 ways, for example, as 19678096 + 20502784 = 4436^2 + 4528^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×40180880² = 3229006235148800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

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, 251051 + ... + 251210.

Almost surely, 2^40180880 is an apocalyptic number.

40180880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40180880 is an abundant number, since it is smaller than the sum of its proper divisors (53239852).

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

40180880 is a wasteful number, since it uses less digits than its factorization.

40180880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502274 (or 502268 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 40180880 is about 6338.8390104182. The cubic root of 40180880 is about 342.5099149988.

Adding to 40180880 its reverse (8808104), we get a palindrome (48988984).

The spelling of 40180880 in words is "forty million, one hundred eighty thousand, eight hundred eighty".