80421432 has 128 divisors (see below), whose sum is σ = 258370560. Its totient is φ = 20275200.

The previous prime is 80421431. The next prime is 80421443. The reversal of 80421432 is 23412408.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80421431) 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 31 ways as a sum of consecutive naturals, for example, 49432 + ... + 51032.

It is an arithmetic number, because the mean of its divisors is an integer number (2018520).

Almost surely, 2^80421432 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 80421432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129185280).

80421432 is an abundant number, since it is smaller than the sum of its proper divisors (177949128).

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

80421432 is a wasteful number, since it uses less digits than its factorization.

80421432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 80421432 is about 8967.7997301456. The cubic root of 80421432 is about 431.6422363764.

The spelling of 80421432 in words is "eighty million, four hundred twenty-one thousand, four hundred thirty-two".