40000515 has 16 divisors (see below), whose sum is σ = 65731488. Its totient is φ = 20756736.

The previous prime is 40000501. The next prime is 40000517. The reversal of 40000515 is 51500004.

It is not a de Polignac number, because 40000515 - 2⁶ = 40000451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 40000494 and 40000503.

It is not an unprimeable number, because it can be changed into a prime (40000517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35482 + ... + 36591.

It is an arithmetic number, because the mean of its divisors is an integer number (4108218).

Almost surely, 2^40000515 is an apocalyptic number.

40000515 is a deficient number, since it is larger than the sum of its proper divisors (25730973).

40000515 is a wasteful number, since it uses less digits than its factorization.

40000515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72118.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 40000515 is about 6324.5960345306. The cubic root of 40000515 is about 341.9966570584.

Adding to 40000515 its reverse (51500004), we get a palindrome (91500519).

The spelling of 40000515 in words is "forty million, five hundred fifteen", and thus it is an aban number.