64128322 has 4 divisors (see below), whose sum is σ = 96192486. Its totient is φ = 32064160.

The previous prime is 64128283. The next prime is 64128343. The reversal of 64128322 is 22382146.

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

It can be written as a sum of positive squares in only one way, i.e., 33977241 + 30151081 = 5829^2 + 5491^2 .

It is a super-2 number, since 2×64128322² = 8224883365071368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16032079 + ... + 16032082.

Almost surely, 2^64128322 is an apocalyptic number.

64128322 is a deficient number, since it is larger than the sum of its proper divisors (32064164).

64128322 is a wasteful number, since it uses less digits than its factorization.

64128322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32064163.

The product of its digits is 4608, while the sum is 28.

The square root of 64128322 is about 8008.0161088749. The cubic root of 64128322 is about 400.2671590254.

The spelling of 64128322 in words is "sixty-four million, one hundred twenty-eight thousand, three hundred twenty-two".