20849010 has 96 divisors (see below), whose sum is σ = 62741952. Its totient is φ = 4394880.

The previous prime is 20849009. The next prime is 20849011. The reversal of 20849010 is 1094802.

It is an interprime number because it is at equal distance from previous prime (20849009) and next prime (20849011).

It is not an unprimeable number, because it can be changed into a prime (20849011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18565 + ... + 19655.

It is an arithmetic number, because the mean of its divisors is an integer number (653562).

Almost surely, 2^20849010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20849010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31370976).

20849010 is an abundant number, since it is smaller than the sum of its proper divisors (41892942).

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

20849010 is a wasteful number, since it uses less digits than its factorization.

20849010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 20849010 is about 4566.0716157327. The cubic root of 20849010 is about 275.2296043874.

The spelling of 20849010 in words is "twenty million, eight hundred forty-nine thousand, ten".