40908540 has 24 divisors (see below), whose sum is σ = 114544080. Its totient is φ = 10908928.

The previous prime is 40908521. The next prime is 40908551. The reversal of 40908540 is 4580904.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40908498 and 40908507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340845 + ... + 340964.

It is an arithmetic number, because the mean of its divisors is an integer number (4772670).

Almost surely, 2^40908540 is an apocalyptic number.

It is an amenable number.

40908540 is an abundant number, since it is smaller than the sum of its proper divisors (73635540).

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

40908540 is a wasteful number, since it uses less digits than its factorization.

40908540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681821 (or 681819 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40908540 is about 6395.9784239786. The cubic root of 40908540 is about 344.5651315629.

The spelling of 40908540 in words is "forty million, nine hundred eight thousand, five hundred forty".