71485972 has 12 divisors (see below), whose sum is σ = 125166580. Its totient is φ = 35724096.

The previous prime is 71485963. The next prime is 71485979. The reversal of 71485972 is 27958417.

71485972 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 57972996 + 13512976 = 7614^2 + 3676^2 .

It is a super-2 number, since 2×71485972² = 10220488385569568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71485979) 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, 7054 + ... + 13882.

Almost surely, 2^71485972 is an apocalyptic number.

It is an amenable number.

71485972 is a deficient number, since it is larger than the sum of its proper divisors (53680608).

71485972 is a wasteful number, since it uses less digits than its factorization.

71485972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9450 (or 9448 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 71485972 is about 8454.9377289250. The cubic root of 71485972 is about 415.0243794649.

The spelling of 71485972 in words is "seventy-one million, four hundred eighty-five thousand, nine hundred seventy-two".