66428148 has 24 divisors (see below), whose sum is σ = 155147328. Its totient is φ = 22121536.

The previous prime is 66428147. The next prime is 66428189. The reversal of 66428148 is 84182466.

It is a super-4 number, since 4×66428148⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66428143) 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 7 ways as a sum of consecutive naturals, for example, 15265 + ... + 19127.

It is an arithmetic number, because the mean of its divisors is an integer number (6464472).

Almost surely, 2^66428148 is an apocalyptic number.

It is an amenable number.

66428148 is an abundant number, since it is smaller than the sum of its proper divisors (88719180).

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

66428148 is a wasteful number, since it uses less digits than its factorization.

66428148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303 (or 5301 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 66428148 is about 8150.3464957019. The cubic root of 66428148 is about 404.9959822799.

The spelling of 66428148 in words is "sixty-six million, four hundred twenty-eight thousand, one hundred forty-eight".