20849049 has 16 divisors (see below), whose sum is σ = 33264000. Its totient is φ = 12829968.

The previous prime is 20849041. The next prime is 20849053. The reversal of 20849049 is 94094802.

It is a happy number.

It is not a de Polignac number, because 20849049 - 2³ = 20849041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20849041) 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, 29349 + ... + 30050.

It is an arithmetic number, because the mean of its divisors is an integer number (2079000).

Almost surely, 2^20849049 is an apocalyptic number.

It is an amenable number.

20849049 is a deficient number, since it is larger than the sum of its proper divisors (12414951).

20849049 is a wasteful number, since it uses less digits than its factorization.

20849049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59421 (or 59415 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 20849049 is about 4566.0758863602. The cubic root of 20849049 is about 275.2297760015.

The spelling of 20849049 in words is "twenty million, eight hundred forty-nine thousand, forty-nine".