27644342 has 16 divisors (see below), whose sum is σ = 45328464. Its totient is φ = 12540000.

The previous prime is 27644333. The next prime is 27644371. The reversal of 27644342 is 24344672.

It is a super-2 number, since 2×27644342² = 1528419289225928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27644299 and 27644308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13592 + ... + 15492.

It is an arithmetic number, because the mean of its divisors is an integer number (2833029).

Almost surely, 2^27644342 is an apocalyptic number.

27644342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27644342 is a deficient number, since it is larger than the sum of its proper divisors (17684122).

27644342 is a wasteful number, since it uses less digits than its factorization.

27644342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575.

The product of its digits is 32256, while the sum is 32.

The square root of 27644342 is about 5257.7886986831. The cubic root of 27644342 is about 302.3677157639.

The spelling of 27644342 in words is "twenty-seven million, six hundred forty-four thousand, three hundred forty-two".