28457639246 has 4 divisors (see below), whose sum is σ = 42686458872. Its totient is φ = 14228819622.

The previous prime is 28457639239. The next prime is 28457639251. The reversal of 28457639246 is 64293675482.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 28457639191 and 28457639200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7114409810 + ... + 7114409813.

It is an arithmetic number, because the mean of its divisors is an integer number (10671614718).

Almost surely, 2^28457639246 is an apocalyptic number.

28457639246 is a deficient number, since it is larger than the sum of its proper divisors (14228819626).

28457639246 is a wasteful number, since it uses less digits than its factorization.

28457639246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14228819625.

The product of its digits is 17418240, while the sum is 56.

The spelling of 28457639246 in words is "twenty-eight billion, four hundred fifty-seven million, six hundred thirty-nine thousand, two hundred forty-six".