40488040 has 16 divisors (see below), whose sum is σ = 91098180. Its totient is φ = 16195200.

The previous prime is 40488017. The next prime is 40488043. The reversal of 40488040 is 4088404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40475044 + 12996 = 6362^2 + 114^2 .

It is not an unprimeable number, because it can be changed into a prime (40488043) 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, 506061 + ... + 506140.

Almost surely, 2^40488040 is an apocalyptic number.

40488040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40488040 is an abundant number, since it is smaller than the sum of its proper divisors (50610140).

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

40488040 is a wasteful number, since it uses less digits than its factorization.

40488040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012212 (or 1012208 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 40488040 is about 6363.0212949510. The cubic root of 40488040 is about 343.3804650370.

The spelling of 40488040 in words is "forty million, four hundred eighty-eight thousand, forty".