28776323434 has 8 divisors (see below), whose sum is σ = 43182351108. Its totient is φ = 14382206400.

The previous prime is 28776323417. The next prime is 28776323437. The reversal of 28776323434 is 43432367782.

It can be written as a sum of positive squares in 2 ways, for example, as 28698054025 + 78269409 = 169405^2 + 8847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×28776323434³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28776323437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2971617 + ... + 2981284.

Almost surely, 2^28776323434 is an apocalyptic number.

28776323434 is a deficient number, since it is larger than the sum of its proper divisors (14406027674).

28776323434 is a wasteful number, since it uses less digits than its factorization.

28776323434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955320.

The product of its digits is 4064256, while the sum is 49.

The spelling of 28776323434 in words is "twenty-eight billion, seven hundred seventy-six million, three hundred twenty-three thousand, four hundred thirty-four".