28456979734 has 4 divisors (see below), whose sum is σ = 42685469604. Its totient is φ = 14228489866.

The previous prime is 28456979717. The next prime is 28456979741. The reversal of 28456979734 is 43797965482.

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

It is a super-3 number, since 3×28456979734³ (a number of 32 digits) contains 333 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, 7114244932 + ... + 7114244935.

It is an arithmetic number, because the mean of its divisors is an integer number (10671367401).

Almost surely, 2^28456979734 is an apocalyptic number.

28456979734 is a deficient number, since it is larger than the sum of its proper divisors (14228489870).

28456979734 is a wasteful number, since it uses less digits than its factorization.

28456979734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14228489869.

The product of its digits is 91445760, while the sum is 64.

The spelling of 28456979734 in words is "twenty-eight billion, four hundred fifty-six million, nine hundred seventy-nine thousand, seven hundred thirty-four".