71236072 has 8 divisors (see below), whose sum is σ = 133567650. Its totient is φ = 35618032.

The previous prime is 71236051. The next prime is 71236127. The reversal of 71236072 is 27063217.

It can be written as a sum of positive squares in only one way, i.e., 67798756 + 3437316 = 8234^2 + 1854^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 71236072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4452247 + ... + 4452262.

Almost surely, 2^71236072 is an apocalyptic number.

It is an amenable number.

71236072 is a deficient number, since it is larger than the sum of its proper divisors (62331578).

71236072 is a wasteful number, since it uses less digits than its factorization.

71236072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8904515 (or 8904511 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 71236072 is about 8440.1464442271. The cubic root of 71236072 is about 414.5402020353.

Adding to 71236072 its reverse (27063217), we get a palindrome (98299289).

The spelling of 71236072 in words is "seventy-one million, two hundred thirty-six thousand, seventy-two".