71453412 has 18 divisors (see below), whose sum is σ = 180618438. Its totient is φ = 23817792.

The previous prime is 71453377. The next prime is 71453449. The reversal of 71453412 is 21435417.

It can be written as a sum of positive squares in only one way, i.e., 66683556 + 4769856 = 8166^2 + 2184^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 992373 + ... + 992444.

Almost surely, 2^71453412 is an apocalyptic number.

It is an amenable number.

71453412 is an abundant number, since it is smaller than the sum of its proper divisors (109165026).

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

71453412 is a wasteful number, since it uses less digits than its factorization.

71453412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984827 (or 1984822 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 71453412 is about 8453.0120075627. The cubic root of 71453412 is about 414.9613589609.

Adding to 71453412 its reverse (21435417), we get a palindrome (92888829).

The spelling of 71453412 in words is "seventy-one million, four hundred fifty-three thousand, four hundred twelve".