20716790 has 16 divisors (see below), whose sum is σ = 38911968. Its totient is φ = 7926336.

The previous prime is 20716789. The next prime is 20716873. The reversal of 20716790 is 9761702.

It is a super-3 number, since 3×20716790³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44807 + ... + 45266.

It is an arithmetic number, because the mean of its divisors is an integer number (2431998).

Almost surely, 2^20716790 is an apocalyptic number.

20716790 is a deficient number, since it is larger than the sum of its proper divisors (18195178).

20716790 is a wasteful number, since it uses less digits than its factorization.

20716790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90103.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 20716790 is about 4551.5700587819. The cubic root of 20716790 is about 274.6465541902.

The spelling of 20716790 in words is "twenty million, seven hundred sixteen thousand, seven hundred ninety".