20342630 has 64 divisors (see below), whose sum is σ = 47278080. Its totient is φ = 6115200.

The previous prime is 20342627. The next prime is 20342633. The reversal of 20342630 is 3624302.

It is an interprime number because it is at equal distance from previous prime (20342627) and next prime (20342633).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21875 + ... + 22785.

It is an arithmetic number, because the mean of its divisors is an integer number (738720).

Almost surely, 2^20342630 is an apocalyptic number.

20342630 is an abundant number, since it is smaller than the sum of its proper divisors (26935450).

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

20342630 is a wasteful number, since it uses less digits than its factorization.

20342630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20342630 is about 4510.2804790833. The cubic root of 20342630 is about 272.9830614706.

Adding to 20342630 its reverse (3624302), we get a palindrome (23966932).

It can be divided in two parts, 2034 and 2630, that added together give a palindrome (4664).

The spelling of 20342630 in words is "twenty million, three hundred forty-two thousand, six hundred thirty".