15890654428 has 12 divisors (see below), whose sum is σ = 30336703992. Its totient is φ = 7223024720.

The previous prime is 15890654387. The next prime is 15890654447. The reversal of 15890654428 is 82445609851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180575575 + ... + 180575662.

It is an arithmetic number, because the mean of its divisors is an integer number (2528058666).

Almost surely, 2^15890654428 is an apocalyptic number.

It is an amenable number.

15890654428 is a deficient number, since it is larger than the sum of its proper divisors (14446049564).

15890654428 is a wasteful number, since it uses less digits than its factorization.

15890654428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361151252 (or 361151250 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 15890654428 in words is "fifteen billion, eight hundred ninety million, six hundred fifty-four thousand, four hundred twenty-eight".