28377080020 has 96 divisors (see below), whose sum is σ = 61491386880. Its totient is φ = 10994780160.

The previous prime is 28377080003. The next prime is 28377080057. The reversal of 28377080020 is 2008077382.

It is a super-2 number, since 2×28377080020² (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 (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51877387 + ... + 51877933.

It is an arithmetic number, because the mean of its divisors is an integer number (640535280).

Almost surely, 2^28377080020 is an apocalyptic number.

28377080020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28377080020 is an abundant number, since it is smaller than the sum of its proper divisors (33114306860).

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

28377080020 is a wasteful number, since it uses less digits than its factorization.

28377080020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The spelling of 28377080020 in words is "twenty-eight billion, three hundred seventy-seven million, eighty thousand, twenty".