128149652 has 24 divisors (see below), whose sum is σ = 237988800. Its totient is φ = 60247616.

The previous prime is 128149639. The next prime is 128149729. The reversal of 128149652 is 256941821.

It is a super-2 number, since 2×128149652² = 32844666615442208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6377 + ... + 17232.

It is an arithmetic number, because the mean of its divisors is an integer number (9916200).

Almost surely, 2^128149652 is an apocalyptic number.

It is an amenable number.

128149652 is a deficient number, since it is larger than the sum of its proper divisors (109839148).

128149652 is a wasteful number, since it uses less digits than its factorization.

128149652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23695 (or 23693 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 128149652 is about 11320.3203134894. The cubic root of 128149652 is about 504.1647494072.

The spelling of 128149652 in words is "one hundred twenty-eight million, one hundred forty-nine thousand, six hundred fifty-two".