20634102 has 24 divisors (see below), whose sum is σ = 46364136. Its totient is φ = 6877872.

The previous prime is 20634101. The next prime is 20634143. The reversal of 20634102 is 20143602.

It is a happy number.

20634102 is a `hidden beast` number, since 20 + 634 + 10 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20634101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20743 + ... + 21714.

It is an arithmetic number, because the mean of its divisors is an integer number (1931839).

Almost surely, 2^20634102 is an apocalyptic number.

20634102 is an abundant number, since it is smaller than the sum of its proper divisors (25730034).

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

20634102 is an equidigital number, since it uses as much as digits as its factorization.

20634102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42474 (or 42462 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20634102 is about 4542.4775178310. The cubic root of 20634102 is about 274.2806632719.

Adding to 20634102 its reverse (20143602), we get a palindrome (40777704).

It can be divided in two parts, 20634 and 102, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20634102 in words is "twenty million, six hundred thirty-four thousand, one hundred two".