27442540 has 12 divisors (see below), whose sum is σ = 57629376. Its totient is φ = 10977008.

The previous prime is 27442531. The next prime is 27442543. The reversal of 27442540 is 4524472.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27442499 and 27442508.

It is not an unprimeable number, because it can be changed into a prime (27442543) 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, 686044 + ... + 686083.

It is an arithmetic number, because the mean of its divisors is an integer number (4802448).

Almost surely, 2^27442540 is an apocalyptic number.

27442540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27442540 is an abundant number, since it is smaller than the sum of its proper divisors (30186836).

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

27442540 is a wasteful number, since it uses less digits than its factorization.

27442540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372136 (or 1372134 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 27442540 is about 5238.5627799999. The cubic root of 27442540 is about 301.6301628889.

The spelling of 27442540 in words is "twenty-seven million, four hundred forty-two thousand, five hundred forty".