28379612144 has 20 divisors (see below), whose sum is σ = 59215152696. Its totient is φ = 13098282432.

The previous prime is 28379612113. The next prime is 28379612147. The reversal of 28379612144 is 44121697382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28379612147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68220014 + ... + 68220429.

Almost surely, 2^28379612144 is an apocalyptic number.

It is an amenable number.

28379612144 is an abundant number, since it is smaller than the sum of its proper divisors (30835540552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28379612144 is a wasteful number, since it uses less digits than its factorization.

28379612144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136440464 (or 136440458 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The spelling of 28379612144 in words is "twenty-eight billion, three hundred seventy-nine million, six hundred twelve thousand, one hundred forty-four".