28744287146 has 16 divisors (see below), whose sum is σ = 43383033600. Its totient is φ = 14283442800.

The previous prime is 28744287133. The next prime is 28744287151. The reversal of 28744287146 is 64178244782.

It is a happy 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, 307871 + ... + 390221.

It is an arithmetic number, because the mean of its divisors is an integer number (2711439600).

Almost surely, 2^28744287146 is an apocalyptic number.

28744287146 is a deficient number, since it is larger than the sum of its proper divisors (14638746454).

28744287146 is a wasteful number, since it uses less digits than its factorization.

28744287146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83429.

The product of its digits is 4816896, while the sum is 53.

The spelling of 28744287146 in words is "twenty-eight billion, seven hundred forty-four million, two hundred eighty-seven thousand, one hundred forty-six".