71798472 has 24 divisors (see below), whose sum is σ = 194454390. Its totient is φ = 23932800.

The previous prime is 71798471. The next prime is 71798483. The reversal of 71798472 is 27489717.

It is a happy number.

71798472 is a `hidden beast` number, since 7 + 179 + 8 + 472 = 666.

It can be written as a sum of positive squares in only one way, i.e., 71673156 + 125316 = 8466^2 + 354^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (71798471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 498529 + ... + 498672.

Almost surely, 2^71798472 is an apocalyptic number.

71798472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71798472 is an abundant number, since it is smaller than the sum of its proper divisors (122655918).

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

71798472 is a wasteful number, since it uses less digits than its factorization.

71798472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997213 (or 997206 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 71798472 is about 8473.3979016685. The cubic root of 71798472 is about 415.6282582668.

It can be divided in two parts, 7179 and 8472, that added together give a palindrome (15651).

The spelling of 71798472 in words is "seventy-one million, seven hundred ninety-eight thousand, four hundred seventy-two".