20120849 has 8 divisors (see below), whose sum is σ = 23092608. Its totient is φ = 17173440.

The previous prime is 20120839. The next prime is 20120851. The reversal of 20120849 is 94802102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120849 - 2⁴ = 20120833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20120819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4277 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (2886576).

Almost surely, 2^20120849 is an apocalyptic number.

It is an amenable number.

20120849 is a deficient number, since it is larger than the sum of its proper divisors (2971759).

20120849 is a wasteful number, since it uses less digits than its factorization.

20120849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12175.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20120849 is about 4485.6269350003. The cubic root of 20120849 is about 271.9873885805.

The spelling of 20120849 in words is "twenty million, one hundred twenty thousand, eight hundred forty-nine".