128599652 has 6 divisors (see below), whose sum is σ = 225049398. Its totient is φ = 64299824.

The previous prime is 128599649. The next prime is 128599697. The reversal of 128599652 is 256995821.

It can be written as a sum of positive squares in only one way, i.e., 117202276 + 11397376 = 10826^2 + 3376^2 .

It is a super-2 number, since 2×128599652² = 33075740989042208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128599597 and 128599606.

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 as a sum of consecutive naturals, namely, 16074953 + ... + 16074960.

It is an arithmetic number, because the mean of its divisors is an integer number (37508233).

Almost surely, 2^128599652 is an apocalyptic number.

It is an amenable number.

128599652 is a deficient number, since it is larger than the sum of its proper divisors (96449746).

128599652 is a wasteful number, since it uses less digits than its factorization.

128599652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32149917 (or 32149915 counting only the distinct ones).

The product of its digits is 388800, while the sum is 47.

The square root of 128599652 is about 11340.1786582046. The cubic root of 128599652 is about 504.7541881166.

The spelling of 128599652 in words is "one hundred twenty-eight million, five hundred ninety-nine thousand, six hundred fifty-two".