20650357 has 16 divisors (see below), whose sum is σ = 25603200. Its totient is φ = 16218432.

The previous prime is 20650339. The next prime is 20650361. The reversal of 20650357 is 75305602.

It is a cyclic number.

It is not a de Polignac number, because 20650357 - 2⁷ = 20650229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12798 + ... + 14320.

It is an arithmetic number, because the mean of its divisors is an integer number (1600200).

Almost surely, 2^20650357 is an apocalyptic number.

It is an amenable number.

20650357 is a deficient number, since it is larger than the sum of its proper divisors (4952843).

20650357 is a wasteful number, since it uses less digits than its factorization.

20650357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 20650357 is about 4544.2663874381. The cubic root of 20650357 is about 274.3526680523.

Adding to 20650357 its reverse (75305602), we get a palindrome (95955959).

The spelling of 20650357 in words is "twenty million, six hundred fifty thousand, three hundred fifty-seven".