20949848 has 16 divisors (see below), whose sum is σ = 41591880. Its totient is φ = 9858688.

The previous prime is 20949833. The next prime is 20949857. The reversal of 20949848 is 84894902.

It is a happy number.

It is a super-2 number, since 2×20949848² = 877792262446208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20949799 and 20949808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76886 + ... + 77157.

Almost surely, 2^20949848 is an apocalyptic number.

It is an amenable number.

20949848 is a deficient number, since it is larger than the sum of its proper divisors (20642032).

20949848 is a wasteful number, since it uses less digits than its factorization.

20949848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154066 (or 154062 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 20949848 is about 4577.1003921697. The cubic root of 20949848 is about 275.6726146866.

The spelling of 20949848 in words is "twenty million, nine hundred forty-nine thousand, eight hundred forty-eight".