27285556420 has 48 divisors (see below), whose sum is σ = 60100951680. Its totient is φ = 10385565696.

The previous prime is 27285556411. The next prime is 27285556439. The reversal of 27285556420 is 2465558272.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 64890 + ... + 242449.

It is an arithmetic number, because the mean of its divisors is an integer number (1252103160).

Almost surely, 2^27285556420 is an apocalyptic number.

27285556420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27285556420 is an abundant number, since it is smaller than the sum of its proper divisors (32815395260).

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

27285556420 is a wasteful number, since it uses less digits than its factorization.

27285556420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307564 (or 307562 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 46.

The spelling of 27285556420 in words is "twenty-seven billion, two hundred eighty-five million, five hundred fifty-six thousand, four hundred twenty".