28749143942 has 16 divisors (see below), whose sum is σ = 43598889792. Its totient is φ = 14216955840.

The previous prime is 28749143933. The next prime is 28749143959. The reversal of 28749143942 is 24934194782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119333 + ... + 267840.

It is an arithmetic number, because the mean of its divisors is an integer number (2724930612).

Almost surely, 2^28749143942 is an apocalyptic number.

28749143942 is a deficient number, since it is larger than the sum of its proper divisors (14849745850).

28749143942 is a wasteful number, since it uses less digits than its factorization.

28749143942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387583.

The product of its digits is 3483648, while the sum is 53.

The spelling of 28749143942 in words is "twenty-eight billion, seven hundred forty-nine million, one hundred forty-three thousand, nine hundred forty-two".