38840715 has 40 divisors (see below), whose sum is σ = 72048240. Its totient is φ = 19994688.

The previous prime is 38840687. The next prime is 38840723. The reversal of 38840715 is 51704883.

It is not a de Polignac number, because 38840715 - 2⁶ = 38840651 is a prime.

It is a super-2 number, since 2×38840715² = 3017202283422450, 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 38840715.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10092 + ... + 13398.

It is an arithmetic number, because the mean of its divisors is an integer number (1801206).

Almost surely, 2^38840715 is an apocalyptic number.

38840715 is a deficient number, since it is larger than the sum of its proper divisors (33207525).

38840715 is a wasteful number, since it uses less digits than its factorization.

38840715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353 (or 3344 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 38840715 is about 6232.2319436940. The cubic root of 38840715 is about 338.6588313274.

The spelling of 38840715 in words is "thirty-eight million, eight hundred forty thousand, seven hundred fifteen".