6405432 has 64 divisors (see below), whose sum is σ = 18403200. Its totient is φ = 1837440.

The previous prime is 6405397. The next prime is 6405457. The reversal of 6405432 is 2345046.

6405432 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a d-powerful number, because it can be written as 6⁸ + 4³ + 0 + 5 + 4¹¹ + 3¹² + 2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4378 + ... + 5654.

It is an arithmetic number, because the mean of its divisors is an integer number (287550).

Almost surely, 2^6405432 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 6405432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9201600).

6405432 is an abundant number, since it is smaller than the sum of its proper divisors (11997768).

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

6405432 is a wasteful number, since it uses less digits than its factorization.

6405432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 6405432 is about 2530.8954936939. The cubic root of 6405432 is about 185.7160658043.

The spelling of 6405432 in words is "six million, four hundred five thousand, four hundred thirty-two".