72871200 has 216 divisors, whose sum is σ = 266584500. Its totient is φ = 18708480.

The previous prime is 72871193. The next prime is 72871207. The reversal of 72871200 is 217827.

It is an interprime number because it is at equal distance from previous prime (72871193) and next prime (72871207).

It can be written as a sum of positive squares in 6 ways, for example, as 35856144 + 37015056 = 5988^2 + 6084^2 .

It is not an unprimeable number, because it can be changed into a prime (72871207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 208626 + ... + 208974.

Almost surely, 2^72871200 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 72871200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133292250).

72871200 is an abundant number, since it is smaller than the sum of its proper divisors (193713300).

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

72871200 is a wasteful number, since it uses less digits than its factorization.

72871200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 72871200 is about 8536.4629677636. The cubic root of 72871200 is about 417.6879763560.

It can be divided in two parts, 72 and 871200, that multiplied together give a square (62726400 = 7920²).

The spelling of 72871200 in words is "seventy-two million, eight hundred seventy-one thousand, two hundred".