128702152 has 8 divisors (see below), whose sum is σ = 241316550. Its totient is φ = 64351072.

The previous prime is 128702149. The next prime is 128702159. The reversal of 128702152 is 251207821.

It can be written as a sum of positive squares in only one way, i.e., 128006596 + 695556 = 11314^2 + 834^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×128702152² = 33128487858862208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128702152.

It is not an unprimeable number, because it can be changed into a prime (128702159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8043877 + ... + 8043892.

Almost surely, 2^128702152 is an apocalyptic number.

It is an amenable number.

128702152 is a deficient number, since it is larger than the sum of its proper divisors (112614398).

128702152 is a wasteful number, since it uses less digits than its factorization.

128702152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16087775 (or 16087771 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 128702152 is about 11344.6970871857. The cubic root of 128702152 is about 504.8882568170. Note that the first 3 decimals are identical.

Adding to 128702152 its reverse (251207821), we get a palindrome (379909973).

The spelling of 128702152 in words is "one hundred twenty-eight million, seven hundred two thousand, one hundred fifty-two".