201445900 has 18 divisors (see below), whose sum is σ = 437137820. Its totient is φ = 80578320.

The previous prime is 201445877. The next prime is 201445913. The reversal of 201445900 is 9544102.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1007130 + ... + 1007329.

Almost surely, 2^201445900 is an apocalyptic number.

201445900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201445900 is an abundant number, since it is smaller than the sum of its proper divisors (235691920).

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

201445900 is a wasteful number, since it uses less digits than its factorization.

201445900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014473 (or 2014466 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 201445900 is about 14193.1638474302. The cubic root of 201445900 is about 586.2094441722.

The spelling of 201445900 in words is "two hundred one million, four hundred forty-five thousand, nine hundred".