27871242 has 16 divisors (see below), whose sum is σ = 63705792. Its totient is φ = 7963200.

The previous prime is 27871241. The next prime is 27871243. The reversal of 27871242 is 24217872.

It is an interprime number because it is at equal distance from previous prime (27871241) and next prime (27871243).

It is a super-2 number, since 2×27871242² = 1553612261245128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27871241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331759 + ... + 331842.

It is an arithmetic number, because the mean of its divisors is an integer number (3981612).

Almost surely, 2^27871242 is an apocalyptic number.

27871242 is an abundant number, since it is smaller than the sum of its proper divisors (35834550).

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

27871242 is a wasteful number, since it uses less digits than its factorization.

27871242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663613.

The product of its digits is 12544, while the sum is 33.

The square root of 27871242 is about 5279.3221155751. The cubic root of 27871242 is about 303.1927234094.

The spelling of 27871242 in words is "twenty-seven million, eight hundred seventy-one thousand, two hundred forty-two".