20682396 has 36 divisors (see below), whose sum is σ = 59749872. Its totient is φ = 5909184.

The previous prime is 20682373. The next prime is 20682407. The reversal of 20682396 is 69328602.

It is a tau number, because it is divible by the number of its divisors (36).

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 20682396.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40785 + ... + 41288.

Almost surely, 2^20682396 is an apocalyptic number.

It is an amenable number.

20682396 is an abundant number, since it is smaller than the sum of its proper divisors (39067476).

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

20682396 is a wasteful number, since it uses less digits than its factorization.

20682396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82090 (or 82085 counting only the distinct ones).

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

The square root of 20682396 is about 4547.7902326295. The cubic root of 20682396 is about 274.4944806638.

The spelling of 20682396 in words is "twenty million, six hundred eighty-two thousand, three hundred ninety-six".