20732672 has 36 divisors (see below), whose sum is σ = 41820240. Its totient is φ = 10257408.

The previous prime is 20732627. The next prime is 20732689. The reversal of 20732672 is 27623702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27533 + ... + 28275.

Almost surely, 2^20732672 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 20732672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20910120).

20732672 is an abundant number, since it is smaller than the sum of its proper divisors (21087568).

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

20732672 is an equidigital number, since it uses as much as digits as its factorization.

20732672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20732672 is about 4553.3143972276. The cubic root of 20732672 is about 274.7167198609.

The spelling of 20732672 in words is "twenty million, seven hundred thirty-two thousand, six hundred seventy-two".