20962187 has 6 divisors (see below), whose sum is σ = 22123908. Its totient is φ = 19858572.

The previous prime is 20962181. The next prime is 20962211. The reversal of 20962187 is 78126902.

It is a happy number.

It is not a de Polignac number, because 20962187 - 2¹⁰ = 20961163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20962181) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 28673 + ... + 29394.

It is an arithmetic number, because the mean of its divisors is an integer number (3687318).

Almost surely, 2^20962187 is an apocalyptic number.

20962187 is a deficient number, since it is larger than the sum of its proper divisors (1161721).

20962187 is an equidigital number, since it uses as much as digits as its factorization.

20962187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58105 (or 58086 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 20962187 is about 4578.4480995202. The cubic root of 20962187 is about 275.7267257682.

The spelling of 20962187 in words is "twenty million, nine hundred sixty-two thousand, one hundred eighty-seven".