32405420 has 12 divisors (see below), whose sum is σ = 68051424. Its totient is φ = 12962160.

The previous prime is 32405389. The next prime is 32405453. The reversal of 32405420 is 2450423.

It is a super-2 number, since 2×32405420² = 2100222490752800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1620271 = 32405420 / (3 + 2 + 4 + 0 + 5 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 32405392 and 32405401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810116 + ... + 810155.

It is an arithmetic number, because the mean of its divisors is an integer number (5670952).

Almost surely, 2^32405420 is an apocalyptic number.

It is an amenable number.

32405420 is an abundant number, since it is smaller than the sum of its proper divisors (35646004).

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

32405420 is a wasteful number, since it uses less digits than its factorization.

32405420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620280 (or 1620278 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 32405420 is about 5692.5758668638. The cubic root of 32405420 is about 318.8153463360.

Adding to 32405420 its reverse (2450423), we get a palindrome (34855843).

The spelling of 32405420 in words is "thirty-two million, four hundred five thousand, four hundred twenty".