28402699975 has 12 divisors (see below), whose sum is σ = 37928529016. Its totient is φ = 20974301280.

The previous prime is 28402699973. The next prime is 28402700047. The reversal of 28402699975 is 57999620482.

It is not a de Polignac number, because 28402699975 - 2¹ = 28402699973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28402699973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43696137 + ... + 43696786.

Almost surely, 2^28402699975 is an apocalyptic number.

28402699975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28402699975 is a deficient number, since it is larger than the sum of its proper divisors (9525829041).

28402699975 is a wasteful number, since it uses less digits than its factorization.

28402699975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87392946 (or 87392941 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 28402699975 in words is "twenty-eight billion, four hundred two million, six hundred ninety-nine thousand, nine hundred seventy-five".