20747200 has 42 divisors (see below), whose sum is σ = 51055016. Its totient is φ = 8298240.

The previous prime is 20747197. The next prime is 20747201. The reversal of 20747200 is 274702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20747201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4884 + ... + 8083.

Almost surely, 2^20747200 is an apocalyptic number.

20747200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20747200 is an abundant number, since it is smaller than the sum of its proper divisors (30307816).

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

20747200 is a wasteful number, since it uses less digits than its factorization.

20747200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12989 (or 12974 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20747200 is about 4554.9094392754. The cubic root of 20747200 is about 274.7808722712.

The spelling of 20747200 in words is "twenty million, seven hundred forty-seven thousand, two hundred".