20826396 has 30 divisors (see below), whose sum is σ = 54445160. Its totient is φ = 6942024.

The previous prime is 20826367. The next prime is 20826397. The reversal of 20826396 is 69362802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20826396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20826397) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 31816 + ... + 32463.

Almost surely, 2^20826396 is an apocalyptic number.

It is an amenable number.

20826396 is an abundant number, since it is smaller than the sum of its proper divisors (33618764).

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

20826396 is a wasteful number, since it uses less digits than its factorization.

20826396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64295 (or 64284 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 20826396 is about 4563.5946358107. The cubic root of 20826396 is about 275.1300585905.

The spelling of 20826396 in words is "twenty million, eight hundred twenty-six thousand, three hundred ninety-six".