28739151146 has 16 divisors (see below), whose sum is σ = 44765102088. Its totient is φ = 13827052800.

The previous prime is 28739151131. The next prime is 28739151169. The reversal of 28739151146 is 64115193782.

It can be written as a sum of positive squares in 4 ways, for example, as 10368330625 + 18370820521 = 101825^2 + 135539^2 .

It is a super-2 number, since 2×28739151146² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28739151146.

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, 2394545 + ... + 2406516.

Almost surely, 2^28739151146 is an apocalyptic number.

28739151146 is a deficient number, since it is larger than the sum of its proper divisors (16025950942).

28739151146 is a wasteful number, since it uses less digits than its factorization.

28739151146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801177.

The product of its digits is 362880, while the sum is 47.

The spelling of 28739151146 in words is "twenty-eight billion, seven hundred thirty-nine million, one hundred fifty-one thousand, one hundred forty-six".