20075776 has 72 divisors (see below), whose sum is σ = 48565440. Its totient is φ = 8085504.

The previous prime is 20075767. The next prime is 20075777. The reversal of 20075776 is 67757002.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20075777) 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, 30135 + ... + 30793.

It is an arithmetic number, because the mean of its divisors is an integer number (674520).

Almost surely, 2^20075776 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 20075776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24282720).

20075776 is an abundant number, since it is smaller than the sum of its proper divisors (28489664).

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

20075776 is an equidigital number, since it uses as much as digits as its factorization.

20075776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 20075776 is about 4480.5999598268. The cubic root of 20075776 is about 271.7841424676.

The spelling of 20075776 in words is "twenty million, seventy-five thousand, seven hundred seventy-six".