28739969076 has 48 divisors (see below), whose sum is σ = 82535298944. Its totient is φ = 7579771776.

The previous prime is 28739969059. The next prime is 28739969081. The reversal of 28739969076 is 67096993782.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28739968998 and 28739969016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13158235 + ... + 13160418.

Almost surely, 2^28739969076 is an apocalyptic number.

28739969076 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28739969076 is an abundant number, since it is smaller than the sum of its proper divisors (53795329868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28739969076 is a wasteful number, since it uses less digits than its factorization.

28739969076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26318680 (or 26318678 counting only the distinct ones).

The product of its (nonzero) digits is 61725888, while the sum is 66.

The spelling of 28739969076 in words is "twenty-eight billion, seven hundred thirty-nine million, nine hundred sixty-nine thousand, seventy-six".