28131285373 has 8 divisors (see below), whose sum is σ = 30113776800. Its totient is φ = 26198983728.

The previous prime is 28131285359. The next prime is 28131285421. The reversal of 28131285373 is 37358213182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28131285373 - 2⁵ = 28131285341 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 (28131285323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12546286 + ... + 12548527.

It is an arithmetic number, because the mean of its divisors is an integer number (3764222100).

Almost surely, 2^28131285373 is an apocalyptic number.

It is an amenable number.

28131285373 is a deficient number, since it is larger than the sum of its proper divisors (1982491427).

28131285373 is a wasteful number, since it uses less digits than its factorization.

28131285373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25094891.

The product of its digits is 241920, while the sum is 43.

The spelling of 28131285373 in words is "twenty-eight billion, one hundred thirty-one million, two hundred eighty-five thousand, three hundred seventy-three".