2727921 has 8 divisors (see below), whose sum is σ = 4156864. Its totient is φ = 1558800.

The previous prime is 2727919. The next prime is 2727941. The reversal of 2727921 is 1297272.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2727921 - 2¹ = 2727919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2727941) 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, 64930 + ... + 64971.

It is an arithmetic number, because the mean of its divisors is an integer number (519608).

2^2727921 is an apocalyptic number.

2727921 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2727921 is a deficient number, since it is larger than the sum of its proper divisors (1428943).

2727921 is a wasteful number, since it uses less digits than its factorization.

2727921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129911.

The product of its digits is 3528, while the sum is 30.

The square root of 2727921 is about 1651.6419103426. The cubic root of 2727921 is about 139.7260117577.

It can be divided in two parts, 272 and 7921, that multiplied together give a palindrome (2154512).

The spelling of 2727921 in words is "two million, seven hundred twenty-seven thousand, nine hundred twenty-one".