80742732 has 96 divisors (see below), whose sum is σ = 224512512. Its totient is φ = 22104576.

The previous prime is 80742721. The next prime is 80742743. The reversal of 80742732 is 23724708.

It is an interprime number because it is at equal distance from previous prime (80742721) and next prime (80742743).

It is a junction number, because it is equal to n+sod(n) for n = 80742693 and 80742702.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257808 + ... + 258120.

It is an arithmetic number, because the mean of its divisors is an integer number (2338672).

Almost surely, 2^80742732 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 80742732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112256256).

80742732 is an abundant number, since it is smaller than the sum of its proper divisors (143769780).

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

80742732 is a wasteful number, since it uses less digits than its factorization.

80742732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 80742732 is about 8985.6959663679. The cubic root of 80742732 is about 432.2163054280.

The spelling of 80742732 in words is "eighty million, seven hundred forty-two thousand, seven hundred thirty-two".