28237392473 has 4 divisors (see below), whose sum is σ = 28658846160. Its totient is φ = 27815938788.

The previous prime is 28237392461. The next prime is 28237392493. The reversal of 28237392473 is 37429373282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28237392473 - 2⁶ = 28237392409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28237392493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210726743 + ... + 210726876.

It is an arithmetic number, because the mean of its divisors is an integer number (7164711540).

Almost surely, 2^28237392473 is an apocalyptic number.

It is an amenable number.

28237392473 is a deficient number, since it is larger than the sum of its proper divisors (421453687).

28237392473 is an equidigital number, since it uses as much as digits as its factorization.

28237392473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421453686.

The product of its digits is 3048192, while the sum is 50.

The spelling of 28237392473 in words is "twenty-eight billion, two hundred thirty-seven million, three hundred ninety-two thousand, four hundred seventy-three".