40070540 has 24 divisors (see below), whose sum is σ = 84280560. Its totient is φ = 16003008.

The previous prime is 40070521. The next prime is 40070549. The reversal of 40070540 is 4507004.

40070540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (40070549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16526 + ... + 18794.

It is an arithmetic number, because the mean of its divisors is an integer number (3511690).

Almost surely, 2^40070540 is an apocalyptic number.

It is an amenable number.

40070540 is an abundant number, since it is smaller than the sum of its proper divisors (44210020).

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

40070540 is a wasteful number, since it uses less digits than its factorization.

40070540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161 (or 3159 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 40070540 is about 6330.1295405386. The cubic root of 40070540 is about 342.1961074474.

Adding to 40070540 its reverse (4507004), we get a palindrome (44577544).

The spelling of 40070540 in words is "forty million, seventy thousand, five hundred forty".