20934556 has 6 divisors (see below), whose sum is σ = 36635480. Its totient is φ = 10467276.

The previous prime is 20934541. The next prime is 20934569. The reversal of 20934556 is 65543902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2616816 + ... + 2616823.

Almost surely, 2^20934556 is an apocalyptic number.

It is an amenable number.

20934556 is a deficient number, since it is larger than the sum of its proper divisors (15700924).

20934556 is a wasteful number, since it uses less digits than its factorization.

20934556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5233643 (or 5233641 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 20934556 is about 4575.4295973165. The cubic root of 20934556 is about 275.6055241165.

The spelling of 20934556 in words is "twenty million, nine hundred thirty-four thousand, five hundred fifty-six".