20799748 has 12 divisors (see below), whose sum is σ = 36943312. Its totient is φ = 10244520.

The previous prime is 20799743. The next prime is 20799763. The reversal of 20799748 is 84799702.

It is a junction number, because it is equal to n+sod(n) for n = 20799698 and 20799707.

It is not an unprimeable number, because it can be changed into a prime (20799743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38538 + ... + 39073.

Almost surely, 2^20799748 is an apocalyptic number.

It is an amenable number.

20799748 is a deficient number, since it is larger than the sum of its proper divisors (16143564).

20799748 is a wasteful number, since it uses less digits than its factorization.

20799748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77682 (or 77680 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 20799748 is about 4560.6740729853. The cubic root of 20799748 is about 275.0126627778.

Subtracting from 20799748 its sum of digits (46), we obtain a palindrome (20799702).

The spelling of 20799748 in words is "twenty million, seven hundred ninety-nine thousand, seven hundred forty-eight".