28963516920 has 64 divisors (see below), whose sum is σ = 93574444320. Its totient is φ = 7129480704.

The previous prime is 28963516909. The next prime is 28963516957. The reversal of 28963516920 is 2961536982.

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, 9281619 + ... + 9284738.

Almost surely, 2^28963516920 is an apocalyptic number.

28963516920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28963516920 is an abundant number, since it is smaller than the sum of its proper divisors (64610927400).

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

28963516920 is a wasteful number, since it uses less digits than its factorization.

28963516920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18566384 (or 18566380 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 28963516920 in words is "twenty-eight billion, nine hundred sixty-three million, five hundred sixteen thousand, nine hundred twenty".