27677421 has 12 divisors (see below), whose sum is σ = 40083420. Its totient is φ = 18403200.

The previous prime is 27677417. The next prime is 27677437. The reversal of 27677421 is 12477672.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26936100 + 741321 = 5190^2 + 861^2 .

It is not a de Polignac number, because 27677421 - 2² = 27677417 is a prime.

It is a super-2 number, since 2×27677421² = 1532079266422482, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27677401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226 + ... + 7443.

It is an arithmetic number, because the mean of its divisors is an integer number (3340285).

Almost surely, 2^27677421 is an apocalyptic number.

It is an amenable number.

27677421 is a deficient number, since it is larger than the sum of its proper divisors (12405999).

27677421 is a wasteful number, since it uses less digits than its factorization.

27677421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8076 (or 8073 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 27677421 is about 5260.9334723032. The cubic root of 27677421 is about 302.4882712935.

The spelling of 27677421 in words is "twenty-seven million, six hundred seventy-seven thousand, four hundred twenty-one".