27477142 has 48 divisors (see below), whose sum is σ = 53187840. Its totient is φ = 10525200.

The previous prime is 27477137. The next prime is 27477179. The reversal of 27477142 is 24177472.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27477098 and 27477107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76359 + ... + 76717.

It is an arithmetic number, because the mean of its divisors is an integer number (1108080).

Almost surely, 2^27477142 is an apocalyptic number.

27477142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27477142 is a deficient number, since it is larger than the sum of its proper divisors (25710698).

27477142 is a wasteful number, since it uses less digits than its factorization.

27477142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 450 counting only the distinct ones).

The product of its digits is 21952, while the sum is 34.

The square root of 27477142 is about 5241.8643629915. The cubic root of 27477142 is about 301.7568837067.

It can be divided in two parts, 2747 and 7142, that added together give a palindrome (9889).

The spelling of 27477142 in words is "twenty-seven million, four hundred seventy-seven thousand, one hundred forty-two".