28149042680 has 64 divisors (see below), whose sum is σ = 73157424480. Its totient is φ = 9633894400.

The previous prime is 28149042679. The next prime is 28149042703. The reversal of 28149042680 is 8624094182.

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 15 ways as a sum of consecutive naturals, for example, 1874141 + ... + 1889100.

Almost surely, 2^28149042680 is an apocalyptic number.

28149042680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28149042680 is an abundant number, since it is smaller than the sum of its proper divisors (45008381800).

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

28149042680 is a wasteful number, since it uses less digits than its factorization.

28149042680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3763280 (or 3763276 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 28149042680 in words is "twenty-eight billion, one hundred forty-nine million, forty-two thousand, six hundred eighty".