40240515 has 48 divisors (see below), whose sum is σ = 76383648. Its totient is φ = 18031104.

The previous prime is 40240483. The next prime is 40240523. The reversal of 40240515 is 51504204.

It is not a de Polignac number, because 40240515 - 2⁵ = 40240483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 40240491 and 40240500.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38439 + ... + 39471.

It is an arithmetic number, because the mean of its divisors is an integer number (1591326).

Almost surely, 2^40240515 is an apocalyptic number.

40240515 is a deficient number, since it is larger than the sum of its proper divisors (36143133).

40240515 is a wasteful number, since it uses less digits than its factorization.

40240515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40240515 is about 6343.5412034604. The cubic root of 40240515 is about 342.6792781564.

Adding to 40240515 its reverse (51504204), we get a palindrome (91744719).

It can be divided in two parts, 402405 and 15, that multiplied together give a triangular number (6036075 = T₃₄₇₄).

The spelling of 40240515 in words is "forty million, two hundred forty thousand, five hundred fifteen".