20363650 has 12 divisors (see below), whose sum is σ = 37876482. Its totient is φ = 8145440.

The previous prime is 20363647. The next prime is 20363659. The reversal of 20363650 is 5636302.

It can be written as a sum of positive squares in 3 ways, for example, as 13845841 + 6517809 = 3721^2 + 2553^2 .

It is a super-3 number, since 3×20363650³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (20363659) 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, 203587 + ... + 203686.

Almost surely, 2^20363650 is an apocalyptic number.

20363650 is a deficient number, since it is larger than the sum of its proper divisors (17512832).

20363650 is a wasteful number, since it uses less digits than its factorization.

20363650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407285 (or 407280 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 20363650 is about 4512.6101094599. The cubic root of 20363650 is about 273.0770533929.

Adding to 20363650 its reverse (5636302), we get a palindrome (25999952).

The spelling of 20363650 in words is "twenty million, three hundred sixty-three thousand, six hundred fifty".