20056736 has 96 divisors (see below), whose sum is σ = 50077440. Its totient is φ = 7704576.

The previous prime is 20056703. The next prime is 20056769. The reversal of 20056736 is 63765002.

It is an interprime number because it is at equal distance from previous prime (20056703) and next prime (20056769).

It is a junction number, because it is equal to n+sod(n) for n = 20056699 and 20056708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87470 + ... + 87698.

It is an arithmetic number, because the mean of its divisors is an integer number (521640).

Almost surely, 2^20056736 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 20056736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25038720).

20056736 is an abundant number, since it is smaller than the sum of its proper divisors (30020704).

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

20056736 is a wasteful number, since it uses less digits than its factorization.

20056736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 20056736 is about 4478.4747403552. The cubic root of 20056736 is about 271.6981946589.

The spelling of 20056736 in words is "twenty million, fifty-six thousand, seven hundred thirty-six".