27721068 has 48 divisors (see below), whose sum is σ = 68361216. Its totient is φ = 8729280.

The previous prime is 27721063. The next prime is 27721069. The reversal of 27721068 is 86012772.

It is a super-2 number, since 2×27721068² = 1536915222121248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27721061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15130 + ... + 16862.

It is an arithmetic number, because the mean of its divisors is an integer number (1424192).

Almost surely, 2^27721068 is an apocalyptic number.

It is an amenable number.

27721068 is an abundant number, since it is smaller than the sum of its proper divisors (40640148).

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

27721068 is a wasteful number, since it uses less digits than its factorization.

27721068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 27721068 is about 5265.0800563714. The cubic root of 27721068 is about 302.6471947168.

The spelling of 27721068 in words is "twenty-seven million, seven hundred twenty-one thousand, sixty-eight".