81875352 has 64 divisors (see below), whose sum is σ = 228060000. Its totient is φ = 24321024.

The previous prime is 81875341. The next prime is 81875357. The reversal of 81875352 is 25357818.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 81875352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81875357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4524 + ... + 13572.

Almost surely, 2^81875352 is an apocalyptic number.

It is a pronic number, being equal to 9048×9049.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81875352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114030000).

81875352 is an abundant number, since it is smaller than the sum of its proper divisors (146184648).

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

81875352 is a wasteful number, since it uses less digits than its factorization.

81875352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9100 (or 9096 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 81875352 is about 9048.4999861856. The cubic root of 81875352 is about 434.2279024169.

The spelling of 81875352 in words is "eighty-one million, eight hundred seventy-five thousand, three hundred fifty-two".