20025684 has 48 divisors (see below), whose sum is σ = 59337600. Its totient is φ = 5721408.

The previous prime is 20025683. The next prime is 20025703. The reversal of 20025684 is 48652002.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12489 + ... + 14000.

It is an arithmetic number, because the mean of its divisors is an integer number (1236200).

Almost surely, 2^20025684 is an apocalyptic number.

It is an amenable number.

20025684 is an abundant number, since it is smaller than the sum of its proper divisors (39311916).

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

20025684 is a wasteful number, since it uses less digits than its factorization.

20025684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26509 (or 26501 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20025684 is about 4475.0065921739. The cubic root of 20025684 is about 271.5579071258.

Adding to 20025684 its reverse (48652002), we get a palindrome (68677686).

The spelling of 20025684 in words is "twenty million, twenty-five thousand, six hundred eighty-four".