20216948 has 12 divisors (see below), whose sum is σ = 36336132. Its totient is φ = 9835200.

The previous prime is 20216947. The next prime is 20216951. The reversal of 20216948 is 84961202.

It can be written as a sum of positive squares in 2 ways, for example, as 12588304 + 7628644 = 3548^2 + 2762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20216941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68153 + ... + 68448.

It is an arithmetic number, because the mean of its divisors is an integer number (3028011).

Almost surely, 2^20216948 is an apocalyptic number.

It is an amenable number.

20216948 is a deficient number, since it is larger than the sum of its proper divisors (16119184).

20216948 is a wasteful number, since it uses less digits than its factorization.

20216948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136642 (or 136640 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 20216948 is about 4496.3260557927. The cubic root of 20216948 is about 272.4197131821.

The spelling of 20216948 in words is "twenty million, two hundred sixteen thousand, nine hundred forty-eight".