80405424 has 120 divisors (see below), whose sum is σ = 256269312. Its totient is φ = 23295360.

The previous prime is 80405389. The next prime is 80405431. The reversal of 80405424 is 42450408.

80405424 is a `hidden beast` number, since 80 + 40 + 542 + 4 = 666.

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 23 ways as a sum of consecutive naturals, for example, 35329 + ... + 37535.

Almost surely, 2^80405424 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 80405424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128134656).

80405424 is an abundant number, since it is smaller than the sum of its proper divisors (175863888).

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

80405424 is a wasteful number, since it uses less digits than its factorization.

80405424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255 (or 2246 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 80405424 is about 8966.9071591045. The cubic root of 80405424 is about 431.6135948096.

It can be divided in two parts, 80 and 405424, that added together give a palindrome (405504).

The spelling of 80405424 in words is "eighty million, four hundred five thousand, four hundred twenty-four".