71572152 has 16 divisors (see below), whose sum is σ = 178930440. Its totient is φ = 23857376.

The previous prime is 71572139. The next prime is 71572153. The reversal of 71572152 is 25127517.

It is a super-2 number, since 2×71572152² = 10245145883822208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71572153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491063 + ... + 1491110.

Almost surely, 2^71572152 is an apocalyptic number.

It is an amenable number.

71572152 is an abundant number, since it is smaller than the sum of its proper divisors (107358288).

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

71572152 is a wasteful number, since it uses less digits than its factorization.

71572152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982182 (or 2982178 counting only the distinct ones).

The product of its digits is 4900, while the sum is 30.

The square root of 71572152 is about 8460.0326240506. The cubic root of 71572152 is about 415.1910902042.

Adding to 71572152 its reverse (25127517), we get a palindrome (96699669).

The spelling of 71572152 in words is "seventy-one million, five hundred seventy-two thousand, one hundred fifty-two".