20434200 has 48 divisors (see below), whose sum is σ = 63347880. Its totient is φ = 5448960.

The previous prime is 20434181. The next prime is 20434223. The reversal of 20434200 is 243402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20434200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16429 + ... + 17628.

Almost surely, 2^20434200 is an apocalyptic number.

20434200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20434200 is an abundant number, since it is smaller than the sum of its proper divisors (42913680).

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

20434200 is a wasteful number, since it uses less digits than its factorization.

20434200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34076 (or 34067 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20434200 is about 4520.4203344379. The cubic root of 20434200 is about 273.3920489897.

Adding to 20434200 its reverse (243402), we get a palindrome (20677602).

The spelling of 20434200 in words is "twenty million, four hundred thirty-four thousand, two hundred".