32420643 has 4 divisors (see below), whose sum is σ = 43227528. Its totient is φ = 21613760.

The previous prime is 32420629. The next prime is 32420651. The reversal of 32420643 is 34602423.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32420643 - 2⁵ = 32420611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32420603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5403438 + ... + 5403443.

It is an arithmetic number, because the mean of its divisors is an integer number (10806882).

Almost surely, 2^32420643 is an apocalyptic number.

32420643 is a deficient number, since it is larger than the sum of its proper divisors (10806885).

32420643 is a wasteful number, since it uses less digits than its factorization.

32420643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10806884.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 32420643 is about 5693.9128022828. The cubic root of 32420643 is about 318.8652615070.

The spelling of 32420643 in words is "thirty-two million, four hundred twenty thousand, six hundred forty-three".