80329440 has 96 divisors (see below), whose sum is σ = 255449376. Its totient is φ = 21217280.

The previous prime is 80329427. The next prime is 80329451. The reversal of 80329440 is 4492308.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 80329398 and 80329407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53500 + ... + 54980.

It is an arithmetic number, because the mean of its divisors is an integer number (2660931).

Almost surely, 2^80329440 is an apocalyptic number.

80329440 is a gapful number since it is divisible by the number (80) 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 80329440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127724688).

80329440 is an abundant number, since it is smaller than the sum of its proper divisors (175119936).

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

80329440 is a wasteful number, since it uses less digits than its factorization.

80329440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 80329440 is about 8962.6692452639. The cubic root of 80329440 is about 431.4775921125.

The spelling of 80329440 in words is "eighty million, three hundred twenty-nine thousand, four hundred forty".