27800213620 has 48 divisors (see below), whose sum is σ = 60936841728. Its totient is φ = 10633441280.

The previous prime is 27800213593. The next prime is 27800213633. The reversal of 27800213620 is 2631200872.

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, 2054517 + ... + 2068003.

It is an arithmetic number, because the mean of its divisors is an integer number (1269517536).

Almost surely, 2^27800213620 is an apocalyptic number.

27800213620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27800213620 is an abundant number, since it is smaller than the sum of its proper divisors (33136628108).

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

27800213620 is a wasteful number, since it uses less digits than its factorization.

27800213620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18000 (or 17998 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 27800213620 in words is "twenty-seven billion, eight hundred million, two hundred thirteen thousand, six hundred twenty".