20765416 has 24 divisors (see below), whose sum is σ = 45292770. Its totient is φ = 8899296.

The previous prime is 20765413. The next prime is 20765417. The reversal of 20765416 is 61456702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13764100 + 7001316 = 3710^2 + 2646^2 .

It is not an unprimeable number, because it can be changed into a prime (20765411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26095 + ... + 26878.

Almost surely, 2^20765416 is an apocalyptic number.

It is an amenable number.

20765416 is an abundant number, since it is smaller than the sum of its proper divisors (24527354).

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

20765416 is a wasteful number, since it uses less digits than its factorization.

20765416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52993 (or 52982 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20765416 is about 4556.9086012340. The cubic root of 20765416 is about 274.8612677651.

The spelling of 20765416 in words is "twenty million, seven hundred sixty-five thousand, four hundred sixteen".