28749233877 has 64 divisors (see below), whose sum is σ = 49136984064. Its totient is φ = 14546407680.

The previous prime is 28749233861. The next prime is 28749233941. The reversal of 28749233877 is 77833294782.

It is not a de Polignac number, because 28749233877 - 2⁴ = 28749233861 is a prime.

It is a super-2 number, since 2×28749233877² (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 28749233877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28749233837) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 697128 + ... + 737214.

It is an arithmetic number, because the mean of its divisors is an integer number (767765376).

Almost surely, 2^28749233877 is an apocalyptic number.

It is an amenable number.

28749233877 is a deficient number, since it is larger than the sum of its proper divisors (20387750187).

28749233877 is a wasteful number, since it uses less digits than its factorization.

28749233877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40218.

The product of its digits is 28449792, while the sum is 60.

It can be divided in two parts, 2874923 and 3877, that added together give a triangular number (2878800 = T₂₃₉₉).

The spelling of 28749233877 in words is "twenty-eight billion, seven hundred forty-nine million, two hundred thirty-three thousand, eight hundred seventy-seven".