28799779430 has 16 divisors (see below), whose sum is σ = 52495801920. Its totient is φ = 11374089792.

The previous prime is 28799779409. The next prime is 28799779451. The reversal of 28799779430 is 3497799782.

It is an interprime number because it is at equal distance from previous prime (28799779409) and next prime (28799779451).

It is a super-2 number, since 2×28799779430² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18226919 + ... + 18228498.

It is an arithmetic number, because the mean of its divisors is an integer number (3280987620).

Almost surely, 2^28799779430 is an apocalyptic number.

28799779430 is a deficient number, since it is larger than the sum of its proper divisors (23696022490).

28799779430 is a wasteful number, since it uses less digits than its factorization.

28799779430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36455503.

The product of its (nonzero) digits is 48009024, while the sum is 65.

The spelling of 28799779430 in words is "twenty-eight billion, seven hundred ninety-nine million, seven hundred seventy-nine thousand, four hundred thirty".