201456 has 30 divisors (see below), whose sum is σ = 564200. Its totient is φ = 67104.

The previous prime is 201451. The next prime is 201473. The reversal of 201456 is 654102.

It is a happy number.

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

It is an Ulam number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201451) by changing a digit.

201456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556 + ... + 843.

2²⁰¹⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

201456 is an abundant number, since it is smaller than the sum of its proper divisors (362744).

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

201456 is a wasteful number, since it uses less digits than its factorization.

201456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201456 is about 448.8385010224. The cubic root of 201456 is about 58.6219241040.

Adding to 201456 its reverse (654102), we get a palindrome (855558).

The spelling of 201456 in words is "two hundred one thousand, four hundred fifty-six".