71432250 has 128 divisors (see below), whose sum is σ = 192471552. Its totient is φ = 17600000.

The previous prime is 71432243. The next prime is 71432261. The reversal of 71432250 is 5223417.

It is a super-3 number, since 3×71432250³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71432250.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 707200 + ... + 707300.

It is an arithmetic number, because the mean of its divisors is an integer number (1503684).

Almost surely, 2^71432250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71432250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96235776).

71432250 is an abundant number, since it is smaller than the sum of its proper divisors (121039302).

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

71432250 is a wasteful number, since it uses less digits than its factorization.

71432250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 71432250 is about 8451.7601717039. The cubic root of 71432250 is about 414.9203892386.

Adding to 71432250 its reverse (5223417), we get a palindrome (76655667).

The spelling of 71432250 in words is "seventy-one million, four hundred thirty-two thousand, two hundred fifty".