32428979 has 18 divisors (see below), whose sum is σ = 37956252. Its totient is φ = 27472000.

The previous prime is 32428973. The next prime is 32428987. The reversal of 32428979 is 97982423.

It is not a de Polignac number, because 32428979 - 2⁸ = 32428723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32428973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 321029 + ... + 321129.

Almost surely, 2^32428979 is an apocalyptic number.

32428979 is a deficient number, since it is larger than the sum of its proper divisors (5527273).

32428979 is a wasteful number, since it uses less digits than its factorization.

32428979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 129 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 32428979 is about 5694.6447650402. The cubic root of 32428979 is about 318.8925880577.

Multiplying 32428979 by its sum of digits (44), we get a square (1426875076 = 37774²).

It can be divided in two parts, 3242 and 8979, that added together give a palindrome (12221).

The spelling of 32428979 in words is "thirty-two million, four hundred twenty-eight thousand, nine hundred seventy-nine".