72471412 has 12 divisors (see below), whose sum is σ = 136580836. Its totient is φ = 33448320.

The previous prime is 72471409. The next prime is 72471433. The reversal of 72471412 is 21417427.

It can be written as a sum of positive squares in 2 ways, for example, as 26584336 + 45887076 = 5156^2 + 6774^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696789 + ... + 696892.

Almost surely, 2^72471412 is an apocalyptic number.

It is an amenable number.

72471412 is a deficient number, since it is larger than the sum of its proper divisors (64109424).

72471412 is a wasteful number, since it uses less digits than its factorization.

72471412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393698 (or 1393696 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 72471412 is about 8513.0142722775. The cubic root of 72471412 is about 416.9227314196.

Adding to 72471412 its reverse (21417427), we get a palindrome (93888839).

The spelling of 72471412 in words is "seventy-two million, four hundred seventy-one thousand, four hundred twelve".