40487140 has 12 divisors (see below), whose sum is σ = 85023036. Its totient is φ = 16194848.

The previous prime is 40487113. The next prime is 40487143. The reversal of 40487140 is 4178404.

It can be written as a sum of positive squares in 2 ways, for example, as 10653696 + 29833444 = 3264^2 + 5462^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40487099 and 40487108.

It is not an unprimeable number, because it can be changed into a prime (40487143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012159 + ... + 1012198.

It is an arithmetic number, because the mean of its divisors is an integer number (7085253).

Almost surely, 2^40487140 is an apocalyptic number.

It is an amenable number.

40487140 is an abundant number, since it is smaller than the sum of its proper divisors (44535896).

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

40487140 is a wasteful number, since it uses less digits than its factorization.

40487140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024366 (or 2024364 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 40487140 is about 6362.9505734368. The cubic root of 40487140 is about 343.3779207078.

The spelling of 40487140 in words is "forty million, four hundred eighty-seven thousand, one hundred forty".