27283421 has 4 divisors (see below), whose sum is σ = 29763744. Its totient is φ = 24803100.

The previous prime is 27283391. The next prime is 27283423. The reversal of 27283421 is 12438272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27283421 - 2¹⁰ = 27282397 is a prime.

It is a super-2 number, since 2×27283421² = 1488770122926482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27283423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240145 + ... + 1240166.

It is an arithmetic number, because the mean of its divisors is an integer number (7440936).

Almost surely, 2^27283421 is an apocalyptic number.

It is an amenable number.

27283421 is a deficient number, since it is larger than the sum of its proper divisors (2480323).

27283421 is a wasteful number, since it uses less digits than its factorization.

27283421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480322.

The product of its digits is 5376, while the sum is 29.

The square root of 27283421 is about 5223.3534247646. The cubic root of 27283421 is about 301.0460557261.

The spelling of 27283421 in words is "twenty-seven million, two hundred eighty-three thousand, four hundred twenty-one".