32420405 has 8 divisors (see below), whose sum is σ = 40246200. Its totient is φ = 25041856.

The previous prime is 32420387. The next prime is 32420417. The reversal of 32420405 is 50402423.

It can be written as a sum of positive squares in 4 ways, for example, as 3076516 + 29343889 = 1754^2 + 5417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32420405 - 2¹² = 32416309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111650 + ... + 111939.

It is an arithmetic number, because the mean of its divisors is an integer number (5030775).

Almost surely, 2^32420405 is an apocalyptic number.

It is an amenable number.

32420405 is a deficient number, since it is larger than the sum of its proper divisors (7825795).

32420405 is a wasteful number, since it uses less digits than its factorization.

32420405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223623.

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

The square root of 32420405 is about 5693.8919027323. The cubic root of 32420405 is about 318.8644812416.

Adding to 32420405 its reverse (50402423), we get a palindrome (82822828).

The spelling of 32420405 in words is "thirty-two million, four hundred twenty thousand, four hundred five".