201851232 has 72 divisors (see below), whose sum is σ = 582441048. Its totient is φ = 61163520.

The previous prime is 201851201. The next prime is 201851233. The reversal of 201851232 is 232158102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201851233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2928 + ... + 20304.

It is an arithmetic number, because the mean of its divisors is an integer number (8089459).

Almost surely, 2^201851232 is an apocalyptic number.

201851232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201851232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291220524).

201851232 is an abundant number, since it is smaller than the sum of its proper divisors (380589816).

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

201851232 is a wasteful number, since it uses less digits than its factorization.

201851232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17412 (or 17393 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 201851232 is about 14207.4357996086. The cubic root of 201851232 is about 586.6023540612.

The spelling of 201851232 in words is "two hundred one million, eight hundred fifty-one thousand, two hundred thirty-two".