201687432 has 64 divisors (see below), whose sum is σ = 533131200. Its totient is φ = 63406080.

The previous prime is 201687401. The next prime is 201687463. The reversal of 201687432 is 234786102.

It is an interprime number because it is at equal distance from previous prime (201687401) and next prime (201687463).

It is a junction number, because it is equal to n+sod(n) for n = 201687393 and 201687402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116332 + ... + 118052.

It is an arithmetic number, because the mean of its divisors is an integer number (8330175).

Almost surely, 2^201687432 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 201687432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266565600).

201687432 is an abundant number, since it is smaller than the sum of its proper divisors (331443768).

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

201687432 is a wasteful number, since it uses less digits than its factorization.

201687432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 201687432 is about 14201.6700426394. The cubic root of 201687432 is about 586.4436373880.

The spelling of 201687432 in words is "two hundred one million, six hundred eighty-seven thousand, four hundred thirty-two".