2727438021 has 32 divisors (see below), whose sum is σ = 5037696000. Its totient is φ = 1416849840.

The previous prime is 2727437987. The next prime is 2727438031. The reversal of 2727438021 is 1208347272.

2727438021 is a `hidden beast` number, since 2 + 7 + 274 + 380 + 2 + 1 = 666.

It is not a de Polignac number, because 2727438021 - 2⁷ = 2727437893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2727438031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 653871 + ... + 658028.

It is an arithmetic number, because the mean of its divisors is an integer number (157428000).

Almost surely, 2^2727438021 is an apocalyptic number.

2727438021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2727438021 is a deficient number, since it is larger than the sum of its proper divisors (2310257979).

2727438021 is a wasteful number, since it uses less digits than its factorization.

2727438021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311926 (or 1311920 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 2727438021 is about 52224.8793296835. The cubic root of 2727438021 is about 1397.1776509753.

The spelling of 2727438021 in words is "two billion, seven hundred twenty-seven million, four hundred thirty-eight thousand, twenty-one".