28424436875 has 40 divisors (see below), whose sum is σ = 36297905952. Its totient is φ = 22245120000.

The previous prime is 28424436869. The next prime is 28424436899. The reversal of 28424436875 is 57863442482.

It is not a de Polignac number, because 28424436875 - 2⁶ = 28424436811 is a prime.

It is a super-2 number, since 2×28424436875² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7356194 + ... + 7360056.

Almost surely, 2^28424436875 is an apocalyptic number.

28424436875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28424436875 is a deficient number, since it is larger than the sum of its proper divisors (7873469077).

28424436875 is an equidigital number, since it uses as much as digits as its factorization.

28424436875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137 (or 4122 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 53.

The spelling of 28424436875 in words is "twenty-eight billion, four hundred twenty-four million, four hundred thirty-six thousand, eight hundred seventy-five".