28094142428 has 24 divisors (see below), whose sum is σ = 55483732080. Its totient is φ = 12329717120.

The previous prime is 28094142413. The next prime is 28094142473. The reversal of 28094142428 is 82424149082.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 11007401 + ... + 11009952.

It is an arithmetic number, because the mean of its divisors is an integer number (2311822170).

Almost surely, 2^28094142428 is an apocalyptic number.

It is an amenable number.

28094142428 is a deficient number, since it is larger than the sum of its proper divisors (27389589652).

28094142428 is a wasteful number, since it uses less digits than its factorization.

28094142428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22017397 (or 22017395 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 28094142428 in words is "twenty-eight billion, ninety-four million, one hundred forty-two thousand, four hundred twenty-eight".