71368272 has 30 divisors (see below), whose sum is σ = 199732442. Its totient is φ = 23789376.

The previous prime is 71368267. The next prime is 71368273. The reversal of 71368272 is 27286317.

It can be written as a sum of positive squares in only one way, i.e., 70963776 + 404496 = 8424^2 + 636^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71368273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 247663 + ... + 247950.

Almost surely, 2^71368272 is an apocalyptic number.

71368272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71368272 is an abundant number, since it is smaller than the sum of its proper divisors (128364170).

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

71368272 is a wasteful number, since it uses less digits than its factorization.

71368272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495627 (or 495618 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 71368272 is about 8447.9744317795. The cubic root of 71368272 is about 414.7964783262.

The spelling of 71368272 in words is "seventy-one million, three hundred sixty-eight thousand, two hundred seventy-two".