20107236 has 48 divisors (see below), whose sum is σ = 48323520. Its totient is φ = 6504960.

The previous prime is 20107223. The next prime is 20107289. The reversal of 20107236 is 63270102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71416 + ... + 71696.

It is an arithmetic number, because the mean of its divisors is an integer number (1006740).

Almost surely, 2^20107236 is an apocalyptic number.

It is an amenable number.

20107236 is an abundant number, since it is smaller than the sum of its proper divisors (28216284).

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

20107236 is a wasteful number, since it uses less digits than its factorization.

20107236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20107236 is about 4484.1092760993. The cubic root of 20107236 is about 271.9260359732.

Adding to 20107236 its reverse (63270102), we get a palindrome (83377338).

The spelling of 20107236 in words is "twenty million, one hundred seven thousand, two hundred thirty-six".