28249670841 has 16 divisors (see below), whose sum is σ = 43129442304. Its totient is φ = 16111797264.

The previous prime is 28249670833. The next prime is 28249670843. The reversal of 28249670841 is 14807694282.

It is not a de Polignac number, because 28249670841 - 2³ = 28249670833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28249670843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1275081 + ... + 1297046.

It is an arithmetic number, because the mean of its divisors is an integer number (2695590144).

Almost surely, 2^28249670841 is an apocalyptic number.

28249670841 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28249670841 is a deficient number, since it is larger than the sum of its proper divisors (14879771463).

28249670841 is a wasteful number, since it uses less digits than its factorization.

28249670841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572660.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 28249670841 in words is "twenty-eight billion, two hundred forty-nine million, six hundred seventy thousand, eight hundred forty-one".