40515338 has 4 divisors (see below), whose sum is σ = 60773010. Its totient is φ = 20257668.

The previous prime is 40515337. The next prime is 40515341. The reversal of 40515338 is 83351504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37736449 + 2778889 = 6143^2 + 1667^2 .

It is a super-2 number, since 2×40515338² = 3282985226508488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40515338.

It is not an unprimeable number, because it can be changed into a prime (40515337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10128833 + ... + 10128836.

Almost surely, 2^40515338 is an apocalyptic number.

40515338 is a deficient number, since it is larger than the sum of its proper divisors (20257672).

40515338 is a wasteful number, since it uses less digits than its factorization.

40515338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20257671.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 40515338 is about 6365.1659836959. The cubic root of 40515338 is about 343.4576194600.

The spelling of 40515338 in words is "forty million, five hundred fifteen thousand, three hundred thirty-eight".