20849048 has 32 divisors (see below), whose sum is σ = 43200000. Its totient is φ = 9353760.

The previous prime is 20849041. The next prime is 20849053. The reversal of 20849048 is 84094802.

It is a junction number, because it is equal to n+sod(n) for n = 20848999 and 20849017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20849041) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5453 + ... + 8451.

It is an arithmetic number, because the mean of its divisors is an integer number (1350000).

Almost surely, 2^20849048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20849048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21600000).

20849048 is an abundant number, since it is smaller than the sum of its proper divisors (22350952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20849048 is a wasteful number, since it uses less digits than its factorization.

20849048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095 (or 3091 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 20849048 is about 4566.0757768570. The cubic root of 20849048 is about 275.2297716011.

The spelling of 20849048 in words is "twenty million, eight hundred forty-nine thousand, forty-eight".