64196128 has 24 divisors (see below), whose sum is σ = 131882688. Its totient is φ = 30702144.

The previous prime is 64196123. The next prime is 64196129. The reversal of 64196128 is 82169146.

It is a happy number.

It is a super-2 number, since 2×64196128² = 8242285700384768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64196123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42876 + ... + 44347.

It is an arithmetic number, because the mean of its divisors is an integer number (5495112).

Almost surely, 2^64196128 is an apocalyptic number.

It is an amenable number.

64196128 is an abundant number, since it is smaller than the sum of its proper divisors (67686560).

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

64196128 is a wasteful number, since it uses less digits than its factorization.

64196128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87256 (or 87248 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 64196128 is about 8012.2486232019. The cubic root of 64196128 is about 400.4081833242.

It can be divided in two parts, 641 and 96128, that added together give a palindrome (96769).

The spelling of 64196128 in words is "sixty-four million, one hundred ninety-six thousand, one hundred twenty-eight".