27957642 has 16 divisors (see below), whose sum is σ = 56832672. Its totient is φ = 9166320.

The previous prime is 27957623. The next prime is 27957647. The reversal of 27957642 is 24675972.

It is a junction number, because it is equal to n+sod(n) for n = 27957594 and 27957603.

It is not an unprimeable number, because it can be changed into a prime (27957647) 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, 37828 + ... + 38559.

It is an arithmetic number, because the mean of its divisors is an integer number (3552042).

Almost surely, 2^27957642 is an apocalyptic number.

27957642 is an abundant number, since it is smaller than the sum of its proper divisors (28875030).

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

27957642 is a wasteful number, since it uses less digits than its factorization.

27957642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76453.

The product of its digits is 211680, while the sum is 42.

The square root of 27957642 is about 5287.4986524821. The cubic root of 27957642 is about 303.5056962943.

The spelling of 27957642 in words is "twenty-seven million, nine hundred fifty-seven thousand, six hundred forty-two".