71648412 has 24 divisors (see below), whose sum is σ = 182378112. Its totient is φ = 21711600.

The previous prime is 71648407. The next prime is 71648413. The reversal of 71648412 is 21484617.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71648413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271264 + ... + 271527.

It is an arithmetic number, because the mean of its divisors is an integer number (7599088).

Almost surely, 2^71648412 is an apocalyptic number.

It is an amenable number.

71648412 is an abundant number, since it is smaller than the sum of its proper divisors (110729700).

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

71648412 is a wasteful number, since it uses less digits than its factorization.

71648412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542809 (or 542807 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 71648412 is about 8464.5384989378. The cubic root of 71648412 is about 415.3384996499.

It can be divided in two parts, 7164 and 8412, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 71648412 in words is "seventy-one million, six hundred forty-eight thousand, four hundred twelve".