20628952 has 16 divisors (see below), whose sum is σ = 38737440. Its totient is φ = 10298976.

The previous prime is 20628929. The next prime is 20628977. The reversal of 20628952 is 25982602.

It is a congruent number.

It is an unprimeable number.

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, 5313 + ... + 8335.

It is an arithmetic number, because the mean of its divisors is an integer number (2421090).

Almost surely, 2^20628952 is an apocalyptic number.

It is an amenable number.

20628952 is a deficient number, since it is larger than the sum of its proper divisors (18108488).

20628952 is a wasteful number, since it uses less digits than its factorization.

20628952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882 (or 3878 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20628952 is about 4541.9106111856. The cubic root of 20628952 is about 274.2578424266.

The spelling of 20628952 in words is "twenty million, six hundred twenty-eight thousand, nine hundred fifty-two".