28925533680 has 40 divisors (see below), whose sum is σ = 89669155152. Its totient is φ = 7713475584.

The previous prime is 28925533673. The next prime is 28925533687. The reversal of 28925533680 is 8633552982.

It is an interprime number because it is at equal distance from previous prime (28925533673) and next prime (28925533687).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28925533687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60261289 + ... + 60261768.

Almost surely, 2^28925533680 is an apocalyptic number.

28925533680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28925533680 is an abundant number, since it is smaller than the sum of its proper divisors (60743621472).

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

28925533680 is a wasteful number, since it uses less digits than its factorization.

28925533680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120523073 (or 120523067 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 28925533680 in words is "twenty-eight billion, nine hundred twenty-five million, five hundred thirty-three thousand, six hundred eighty".