28431590379 has 8 divisors (see below), whose sum is σ = 37922990592. Its totient is φ = 18947291880.

The previous prime is 28431590351. The next prime is 28431590413. The reversal of 28431590379 is 97309513482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-28431590379 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28431590309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1766079 + ... + 1782104.

It is an arithmetic number, because the mean of its divisors is an integer number (4740373824).

Almost surely, 2^28431590379 is an apocalyptic number.

28431590379 is a deficient number, since it is larger than the sum of its proper divisors (9491400213).

28431590379 is a wasteful number, since it uses less digits than its factorization.

28431590379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550857.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 28431590379 in words is "twenty-eight billion, four hundred thirty-one million, five hundred ninety thousand, three hundred seventy-nine".