20596728 has 64 divisors (see below), whose sum is σ = 53978400. Its totient is φ = 6540800.

The previous prime is 20596727. The next prime is 20596729. The reversal of 20596728 is 82769502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20596727) and next prime (20596729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20596721) 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, 70150 + ... + 70442.

Almost surely, 2^20596728 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 20596728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26989200).

20596728 is an abundant number, since it is smaller than the sum of its proper divisors (33381672).

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

20596728 is a wasteful number, since it uses less digits than its factorization.

20596728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 20596728 is about 4538.3618189827. The cubic root of 20596728 is about 274.1149641000.

The spelling of 20596728 in words is "twenty million, five hundred ninety-six thousand, seven hundred twenty-eight".