27820942 has 16 divisors (see below), whose sum is σ = 44597520. Its totient is φ = 12970368.

The previous prime is 27820937. The next prime is 27820987. The reversal of 27820942 is 24902872.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 27820898 and 27820907.

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 7 ways as a sum of consecutive naturals, for example, 48 + ... + 7459.

It is an arithmetic number, because the mean of its divisors is an integer number (2787345).

Almost surely, 2^27820942 is an apocalyptic number.

27820942 is a deficient number, since it is larger than the sum of its proper divisors (16776578).

27820942 is a wasteful number, since it uses less digits than its factorization.

27820942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7635.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 27820942 is about 5274.5560950662. The cubic root of 27820942 is about 303.0102201493.

The spelling of 27820942 in words is "twenty-seven million, eight hundred twenty thousand, nine hundred forty-two".