20750716 has 18 divisors (see below), whose sum is σ = 42242928. Its totient is φ = 8893080.

The previous prime is 20750701. The next prime is 20750767. The reversal of 20750716 is 61705702.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52740 + ... + 53131.

Almost surely, 2^20750716 is an apocalyptic number.

It is an amenable number.

20750716 is an abundant number, since it is smaller than the sum of its proper divisors (21492212).

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

20750716 is a wasteful number, since it uses less digits than its factorization.

20750716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105889 (or 105880 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 20750716 is about 4555.2953801043. The cubic root of 20750716 is about 274.7963936424.

The spelling of 20750716 in words is "twenty million, seven hundred fifty thousand, seven hundred sixteen".