28572812386 has 4 divisors (see below), whose sum is σ = 42859218582. Its totient is φ = 14286406192.

The previous prime is 28572812371. The next prime is 28572812399. The reversal of 28572812386 is 68321827582.

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

It can be written as a sum of positive squares in only one way, i.e., 26463155625 + 2109656761 = 162675^2 + 45931^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7143203095 + ... + 7143203098.

Almost surely, 2^28572812386 is an apocalyptic number.

28572812386 is a deficient number, since it is larger than the sum of its proper divisors (14286406196).

28572812386 is a wasteful number, since it uses less digits than its factorization.

28572812386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14286406195.

The product of its digits is 2580480, while the sum is 52.

The spelling of 28572812386 in words is "twenty-eight billion, five hundred seventy-two million, eight hundred twelve thousand, three hundred eighty-six".