20962870 has 16 divisors (see below), whose sum is σ = 39953088. Its totient is φ = 7891840.

The previous prime is 20962861. The next prime is 20962873. The reversal of 20962870 is 7826902.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20962873) 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 7 ways as a sum of consecutive naturals, for example, 61486 + ... + 61825.

It is an arithmetic number, because the mean of its divisors is an integer number (2497068).

Almost surely, 2^20962870 is an apocalyptic number.

20962870 is a deficient number, since it is larger than the sum of its proper divisors (18990218).

20962870 is a wasteful number, since it uses less digits than its factorization.

20962870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123335.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20962870 is about 4578.5226875052. The cubic root of 20962870 is about 275.7297203557.

The spelling of 20962870 in words is "twenty million, nine hundred sixty-two thousand, eight hundred seventy".