20849030 has 8 divisors (see below), whose sum is σ = 37528272. Its totient is φ = 8339608.

The previous prime is 20849029. The next prime is 20849041. The reversal of 20849030 is 3094802.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042442 + ... + 1042461.

It is an arithmetic number, because the mean of its divisors is an integer number (4691034).

Almost surely, 2^20849030 is an apocalyptic number.

20849030 is a deficient number, since it is larger than the sum of its proper divisors (16679242).

20849030 is a wasteful number, since it uses less digits than its factorization.

20849030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084910.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20849030 is about 4566.0738057986. The cubic root of 20849030 is about 275.2296923947.

The spelling of 20849030 in words is "twenty million, eight hundred forty-nine thousand, thirty".