20867948 has 12 divisors (see below), whose sum is σ = 36624840. Its totient is φ = 10403712.

The previous prime is 20867933. The next prime is 20867971. The reversal of 20867948 is 84976802.

It is a junction number, because it is equal to n+sod(n) for n = 20867899 and 20867908.

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, 5978 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (3052070).

Almost surely, 2^20867948 is an apocalyptic number.

It is an amenable number.

20867948 is a deficient number, since it is larger than the sum of its proper divisors (15756892).

20867948 is a wasteful number, since it uses less digits than its factorization.

20867948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15136 (or 15134 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 20867948 is about 4568.1449188921. The cubic root of 20867948 is about 275.3129132330.

It can be divided in two parts, 2086794 and 8, that added together give a palindrome (2086802).

The spelling of 20867948 in words is "twenty million, eight hundred sixty-seven thousand, nine hundred forty-eight".