32220426 has 16 divisors (see below), whose sum is σ = 73646784. Its totient is φ = 9205824.

The previous prime is 32220413. The next prime is 32220437. The reversal of 32220426 is 62402223.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 7 ways as a sum of consecutive naturals, for example, 383535 + ... + 383618.

It is an arithmetic number, because the mean of its divisors is an integer number (4602924).

Almost surely, 2^32220426 is an apocalyptic number.

32220426 is an abundant number, since it is smaller than the sum of its proper divisors (41426358).

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

32220426 is a wasteful number, since it uses less digits than its factorization.

32220426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767165.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 32220426 is about 5676.3039030693. The cubic root of 32220426 is about 318.2075106180.

Adding to 32220426 its reverse (62402223), we get a palindrome (94622649).

The spelling of 32220426 in words is "thirty-two million, two hundred twenty thousand, four hundred twenty-six".