28056106454 has 4 divisors (see below), whose sum is σ = 42084159684. Its totient is φ = 14028053226.

The previous prime is 28056106433. The next prime is 28056106487. The reversal of 28056106454 is 45460165082.

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

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, 7014026612 + ... + 7014026615.

It is an arithmetic number, because the mean of its divisors is an integer number (10521039921).

Almost surely, 2^28056106454 is an apocalyptic number.

28056106454 is a deficient number, since it is larger than the sum of its proper divisors (14028053230).

28056106454 is a wasteful number, since it uses less digits than its factorization.

28056106454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14028053229.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 28056106454 in words is "twenty-eight billion, fifty-six million, one hundred six thousand, four hundred fifty-four".