142628728 has 32 divisors (see below), whose sum is σ = 301806000. Its totient is φ = 62594560.

The previous prime is 142628701. The next prime is 142628743. The reversal of 142628728 is 827826241.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 25393 + ... + 30496.

Almost surely, 2^142628728 is an apocalyptic number.

It is an amenable number.

142628728 is an abundant number, since it is smaller than the sum of its proper divisors (159177272).

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

142628728 is a wasteful number, since it uses less digits than its factorization.

142628728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55935 (or 55931 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 142628728 is about 11942.7269917720. The cubic root of 142628728 is about 522.4791966870.

The spelling of 142628728 in words is "one hundred forty-two million, six hundred twenty-eight thousand, seven hundred twenty-eight".