71484732 has 72 divisors (see below), whose sum is σ = 199263792. Its totient is φ = 21427200.

The previous prime is 71484731. The next prime is 71484733. The reversal of 71484732 is 23748417.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71484731) and next prime (71484733).

It is a super-2 number, since 2×71484732² = 10220133818223648, which contains 22 as substring.

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 (71484731) 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 23 ways as a sum of consecutive naturals, for example, 37482 + ... + 39342.

Almost surely, 2^71484732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71484732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99631896).

71484732 is an abundant number, since it is smaller than the sum of its proper divisors (127779060).

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

71484732 is a wasteful number, since it uses less digits than its factorization.

71484732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979 (or 1974 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 71484732 is about 8454.8643986761. The cubic root of 71484732 is about 415.0219797716.

The spelling of 71484732 in words is "seventy-one million, four hundred eighty-four thousand, seven hundred thirty-two".