20827842 has 24 divisors (see below), whose sum is σ = 48457296. Its totient is φ = 5950728.

The previous prime is 20827837. The next prime is 20827843. The reversal of 20827842 is 24872802.

It is not an unprimeable number, because it can be changed into a prime (20827843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35128 + ... + 35715.

It is an arithmetic number, because the mean of its divisors is an integer number (2019054).

Almost surely, 2^20827842 is an apocalyptic number.

20827842 is an abundant number, since it is smaller than the sum of its proper divisors (27629454).

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

20827842 is a wasteful number, since it uses less digits than its factorization.

20827842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70862 (or 70855 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 20827842 is about 4563.7530608042. The cubic root of 20827842 is about 275.1364259726.

The spelling of 20827842 in words is "twenty million, eight hundred twenty-seven thousand, eight hundred forty-two".