20842076 has 6 divisors (see below), whose sum is σ = 36473640. Its totient is φ = 10421036.

The previous prime is 20842049. The next prime is 20842093. The reversal of 20842076 is 67024802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2605256 + ... + 2605263.

It is an arithmetic number, because the mean of its divisors is an integer number (6078940).

Almost surely, 2^20842076 is an apocalyptic number.

It is an amenable number.

20842076 is a deficient number, since it is larger than the sum of its proper divisors (15631564).

20842076 is a wasteful number, since it uses less digits than its factorization.

20842076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210523 (or 5210521 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 20842076 is about 4565.3122565713. The cubic root of 20842076 is about 275.1990888908.

Adding to 20842076 its reverse (67024802), we get a palindrome (87866878).

The spelling of 20842076 in words is "twenty million, eight hundred forty-two thousand, seventy-six".