390152515 has 48 divisors (see below), whose sum is σ = 519757056. Its totient is φ = 280627200.

The previous prime is 390152513. The next prime is 390152537. The reversal of 390152515 is 515251093.

It is not a de Polignac number, because 390152515 - 2¹ = 390152513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390152513) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 5344519 + ... + 5344591.

It is an arithmetic number, because the mean of its divisors is an integer number (10828272).

Almost surely, 2^390152515 is an apocalyptic number.

390152515 is a deficient number, since it is larger than the sum of its proper divisors (129604541).

390152515 is a wasteful number, since it uses less digits than its factorization.

390152515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 390152515 is about 19752.2787293011. The cubic root of 390152515 is about 730.7095840101.

The spelling of 390152515 in words is "three hundred ninety million, one hundred fifty-two thousand, five hundred fifteen".