20146400 has 36 divisors (see below), whose sum is σ = 49184352. Its totient is φ = 8058240.

The previous prime is 20146393. The next prime is 20146417. The reversal of 20146400 is 464102.

It is a congruent number.

It is an unprimeable number.

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, 11792 + ... + 13391.

It is an arithmetic number, because the mean of its divisors is an integer number (1366232).

Almost surely, 2^20146400 is an apocalyptic number.

20146400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20146400 is an abundant number, since it is smaller than the sum of its proper divisors (29037952).

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

20146400 is a wasteful number, since it uses less digits than its factorization.

20146400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25203 (or 25190 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20146400 is about 4488.4741282534. The cubic root of 20146400 is about 272.1024700423.

The spelling of 20146400 in words is "twenty million, one hundred forty-six thousand, four hundred".