80427732 has 144 divisors (see below), whose sum is σ = 242745216. Its totient is φ = 20275200.

The previous prime is 80427719. The next prime is 80427769. The reversal of 80427732 is 23772408.

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

It is a junction number, because it is equal to n+sod(n) for n = 80427693 and 80427702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 416628 + ... + 416820.

Almost surely, 2^80427732 is an apocalyptic number.

80427732 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80427732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121372608).

80427732 is an abundant number, since it is smaller than the sum of its proper divisors (162317484).

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

80427732 is a wasteful number, since it uses less digits than its factorization.

80427732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 257 counting only the distinct ones).

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

The square root of 80427732 is about 8968.1509799958. The cubic root of 80427732 is about 431.6535073151.

The spelling of 80427732 in words is "eighty million, four hundred twenty-seven thousand, seven hundred thirty-two".