20734200 has 72 divisors (see below), whose sum is σ = 69638400. Its totient is φ = 5528640.

The previous prime is 20734199. The next prime is 20734229. The reversal of 20734200 is 243702.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3960 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (967200).

Almost surely, 2^20734200 is an apocalyptic number.

20734200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20734200 is an abundant number, since it is smaller than the sum of its proper divisors (48904200).

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

20734200 is a wasteful number, since it uses less digits than its factorization.

20734200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11541 (or 11529 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 20734200 is about 4553.4821839994. The cubic root of 20734200 is about 274.7234685783.

Adding to 20734200 its reverse (243702), we get a palindrome (20977902).

The spelling of 20734200 in words is "twenty million, seven hundred thirty-four thousand, two hundred".