20262816 has 216 divisors, whose sum is σ = 72465120. Its totient is φ = 5246208.

The previous prime is 20262811. The next prime is 20262817. The reversal of 20262816 is 61826202.

20262816 is a `hidden beast` number, since 20 + 2 + 628 + 16 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20262816.

It is not an unprimeable number, because it can be changed into a prime (20262811) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 880981 + ... + 881003.

Almost surely, 2^20262816 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 20262816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36232560).

20262816 is an abundant number, since it is smaller than the sum of its proper divisors (52202304).

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

20262816 is a wasteful number, since it uses less digits than its factorization.

20262816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20262816 is about 4501.4237747628. The cubic root of 20262816 is about 272.6255785700.

The spelling of 20262816 in words is "twenty million, two hundred sixty-two thousand, eight hundred sixteen".