32220257 has 8 divisors (see below), whose sum is σ = 33986400. Its totient is φ = 30461184.

The previous prime is 32220241. The next prime is 32220259. The reversal of 32220257 is 75202223.

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 32220257 - 2⁴ = 32220241 is a prime.

It is a super-2 number, since 2×32220257² = 2076289922292098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32220259) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9494 + ... + 12432.

It is an arithmetic number, because the mean of its divisors is an integer number (4248300).

Almost surely, 2^32220257 is an apocalyptic number.

It is an amenable number.

32220257 is a deficient number, since it is larger than the sum of its proper divisors (1766143).

32220257 is a wasteful number, since it uses less digits than its factorization.

32220257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 32220257 is about 5676.2890166023. The cubic root of 32220257 is about 318.2069542715.

The spelling of 32220257 in words is "thirty-two million, two hundred twenty thousand, two hundred fifty-seven".