201894456 has 64 divisors (see below), whose sum is σ = 533174400. Its totient is φ = 63531648.

The previous prime is 201894419. The next prime is 201894457. The reversal of 201894456 is 654498102.

It is a super-2 number, since 2×201894456² = 81522742727071872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201894457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169495 + ... + 170681.

It is an arithmetic number, because the mean of its divisors is an integer number (8330850).

Almost surely, 2^201894456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201894456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266587200).

201894456 is an abundant number, since it is smaller than the sum of its proper divisors (331279944).

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

201894456 is a wasteful number, since it uses less digits than its factorization.

201894456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588 (or 1584 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 201894456 is about 14208.9568934528. The cubic root of 201894456 is about 586.6442223392.

The spelling of 201894456 in words is "two hundred one million, eight hundred ninety-four thousand, four hundred fifty-six".