20952884 has 6 divisors (see below), whose sum is σ = 36667554. Its totient is φ = 10476440.

The previous prime is 20952871. The next prime is 20952887. The reversal of 20952884 is 48825902.

It can be written as a sum of positive squares in only one way, i.e., 14592400 + 6360484 = 3820^2 + 2522^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20952887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2619107 + ... + 2619114.

It is an arithmetic number, because the mean of its divisors is an integer number (6111259).

Almost surely, 2^20952884 is an apocalyptic number.

It is an amenable number.

20952884 is a deficient number, since it is larger than the sum of its proper divisors (15714670).

20952884 is a wasteful number, since it uses less digits than its factorization.

20952884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238225 (or 5238223 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 20952884 is about 4577.4320311721. The cubic root of 20952884 is about 275.6859306405.

The spelling of 20952884 in words is "twenty million, nine hundred fifty-two thousand, eight hundred eighty-four".