15238856434 has 32 divisors (see below), whose sum is σ = 24188267520. Its totient is φ = 7190726400.

The previous prime is 15238856431. The next prime is 15238856497. The reversal of 15238856434 is 43465883251.

It is not an unprimeable number, because it can be changed into a prime (15238856431) 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, 383899 + ... + 421729.

It is an arithmetic number, because the mean of its divisors is an integer number (755883360).

Almost surely, 2^15238856434 is an apocalyptic number.

15238856434 is a deficient number, since it is larger than the sum of its proper divisors (8949411086).

15238856434 is a wasteful number, since it uses less digits than its factorization.

15238856434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38026.

The product of its digits is 2764800, while the sum is 49.

The spelling of 15238856434 in words is "fifteen billion, two hundred thirty-eight million, eight hundred fifty-six thousand, four hundred thirty-four".