20849682 has 32 divisors (see below), whose sum is σ = 47803392. Its totient is φ = 5938704.

The previous prime is 20849681. The next prime is 20849713. The reversal of 20849682 is 28694802.

20849682 = T₂₁₄₈ + T₂₁₄₉ + ... + T₂₁₅₆.

It is a super-2 number, since 2×20849682² = 869418479002248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 20849682.

It is not an unprimeable number, because it can be changed into a prime (20849681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19083 + ... + 20145.

It is an arithmetic number, because the mean of its divisors is an integer number (1493856).

Almost surely, 2^20849682 is an apocalyptic number.

20849682 is an abundant number, since it is smaller than the sum of its proper divisors (26953710).

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

20849682 is a wasteful number, since it uses less digits than its factorization.

20849682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 20849682 is about 4566.1452013706. The cubic root of 20849682 is about 275.2325613993.

The spelling of 20849682 in words is "twenty million, eight hundred forty-nine thousand, six hundred eighty-two".