28633495894 has 4 divisors (see below), whose sum is σ = 42950243844. Its totient is φ = 14316747946.

The previous prime is 28633495871. The next prime is 28633495903. The reversal of 28633495894 is 49859433682.

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

It is a super-2 number, since 2×28633495894² (a number of 22 digits) contains 22 as substring.

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, 7158373972 + ... + 7158373975.

It is an arithmetic number, because the mean of its divisors is an integer number (10737560961).

Almost surely, 2^28633495894 is an apocalyptic number.

28633495894 is a deficient number, since it is larger than the sum of its proper divisors (14316747950).

28633495894 is a wasteful number, since it uses less digits than its factorization.

28633495894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14316747949.

The product of its digits is 44789760, while the sum is 61.

The spelling of 28633495894 in words is "twenty-eight billion, six hundred thirty-three million, four hundred ninety-five thousand, eight hundred ninety-four".