20967798 has 16 divisors (see below), whose sum is σ = 42126336. Its totient is φ = 6957480.

The previous prime is 20967797. The next prime is 20967799. The reversal of 20967798 is 89776902.

It is an interprime number because it is at equal distance from previous prime (20967797) and next prime (20967799).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20967797) 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, 6498 + ... + 9173.

It is an arithmetic number, because the mean of its divisors is an integer number (2632896).

Almost surely, 2^20967798 is an apocalyptic number.

20967798 is an abundant number, since it is smaller than the sum of its proper divisors (21158538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20967798 is a wasteful number, since it uses less digits than its factorization.

20967798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15899.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 20967798 is about 4579.0608207361. The cubic root of 20967798 is about 275.7513250564.

The spelling of 20967798 in words is "twenty million, nine hundred sixty-seven thousand, seven hundred ninety-eight".