20682672 has 40 divisors (see below), whose sum is σ = 53942976. Its totient is φ = 6828096.

The previous prime is 20682671. The next prime is 20682677. The reversal of 20682672 is 27628602.

It is not an unprimeable number, because it can be changed into a prime (20682671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3123 + ... + 7149.

Almost surely, 2^20682672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20682672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26971488).

20682672 is an abundant number, since it is smaller than the sum of its proper divisors (33260304).

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

20682672 is a wasteful number, since it uses less digits than its factorization.

20682672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145 (or 4139 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20682672 is about 4547.8205769357. The cubic root of 20682672 is about 274.4957016722.

The spelling of 20682672 in words is "twenty million, six hundred eighty-two thousand, six hundred seventy-two".