20849548 has 24 divisors (see below), whose sum is σ = 38782800. Its totient is φ = 9773568.

The previous prime is 20849519. The next prime is 20849551. The reversal of 20849548 is 84594802.

It is a self number, because there is not a number n which added to its sum of digits gives 20849548.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25368 + ... + 26176.

It is an arithmetic number, because the mean of its divisors is an integer number (1615950).

Almost surely, 2^20849548 is an apocalyptic number.

It is an amenable number.

20849548 is a deficient number, since it is larger than the sum of its proper divisors (17933252).

20849548 is a wasteful number, since it uses less digits than its factorization.

20849548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 20849548 is about 4566.1305281387. The cubic root of 20849548 is about 275.2319717621.

The spelling of 20849548 in words is "twenty million, eight hundred forty-nine thousand, five hundred forty-eight".