32420256 has 72 divisors (see below), whose sum is σ = 93576672. Its totient is φ = 9820800.

The previous prime is 32420243. The next prime is 32420261. The reversal of 32420256 is 65202423.

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

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10221 + ... + 13011.

It is an arithmetic number, because the mean of its divisors is an integer number (1299676).

Almost surely, 2^32420256 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 32420256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46788336).

32420256 is an abundant number, since it is smaller than the sum of its proper divisors (61156416).

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

32420256 is a wasteful number, since it uses less digits than its factorization.

32420256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826 (or 2807 counting only the distinct ones).

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

The square root of 32420256 is about 5693.8788185208. The cubic root of 32420256 is about 318.8639927541.

Adding to 32420256 its reverse (65202423), we get a palindrome (97622679).

The spelling of 32420256 in words is "thirty-two million, four hundred twenty thousand, two hundred fifty-six".