40509580 has 12 divisors (see below), whose sum is σ = 85070160. Its totient is φ = 16203824.

The previous prime is 40509563. The next prime is 40509583. The reversal of 40509580 is 8590504.

It is not an unprimeable number, because it can be changed into a prime (40509583) 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, 1012720 + ... + 1012759.

It is an arithmetic number, because the mean of its divisors is an integer number (7089180).

Almost surely, 2^40509580 is an apocalyptic number.

It is an amenable number.

40509580 is an abundant number, since it is smaller than the sum of its proper divisors (44560580).

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

40509580 is a wasteful number, since it uses less digits than its factorization.

40509580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025488 (or 2025486 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 40509580 is about 6364.7136620590. The cubic root of 40509580 is about 343.4413480694.

The spelling of 40509580 in words is "forty million, five hundred nine thousand, five hundred eighty".