20344100 has 36 divisors (see below), whose sum is σ = 50455104. Its totient is φ = 6974880.

The previous prime is 20344099. The next prime is 20344111. The reversal of 20344100 is 144302.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13832 + ... + 15231.

Almost surely, 2^20344100 is an apocalyptic number.

20344100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344100 is an abundant number, since it is smaller than the sum of its proper divisors (30111004).

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

20344100 is a wasteful number, since it uses less digits than its factorization.

20344100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29084 (or 29077 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20344100 is about 4510.4434371800. The cubic root of 20344100 is about 272.9896367501.

Adding to 20344100 its reverse (144302), we get a palindrome (20488402).

The spelling of 20344100 in words is "twenty million, three hundred forty-four thousand, one hundred".