28294681494672 has 120 divisors (see below), whose sum is σ = 79239482626304. Its totient is φ = 9425169787392.

The previous prime is 28294681494643. The next prime is 28294681494697. The reversal of 28294681494672 is 27649418649282.

28294681494672 is a `hidden beast` number, since 2 + 8 + 2 + 9 + 4 + 68 + 1 + 494 + 6 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 28294681494672.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2653533213 + ... + 2653543875.

Almost surely, 2^{28294681494672} is an apocalyptic number.

It is an amenable number.

28294681494672 is an abundant number, since it is smaller than the sum of its proper divisors (50944801131632).

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

28294681494672 is a wasteful number, since it uses less digits than its factorization.

28294681494672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21437 (or 21428 counting only the distinct ones).

The product of its digits is 668860416, while the sum is 72.

The spelling of 28294681494672 in words is "twenty-eight trillion, two hundred ninety-four billion, six hundred eighty-one million, four hundred ninety-four thousand, six hundred seventy-two".