128772702 has 48 divisors (see below), whose sum is σ = 295392240. Its totient is φ = 40473216.

The previous prime is 128772689. The next prime is 128772719. The reversal of 128772702 is 207277821.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 19578 + ... + 25314.

It is an arithmetic number, because the mean of its divisors is an integer number (6154005).

Almost surely, 2^128772702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128772702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147696120).

128772702 is an abundant number, since it is smaller than the sum of its proper divisors (166619538).

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

128772702 is a wasteful number, since it uses less digits than its factorization.

128772702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 128772702 is about 11347.8060434606. The cubic root of 128772702 is about 504.9804939693.

The spelling of 128772702 in words is "one hundred twenty-eight million, seven hundred seventy-two thousand, seven hundred two".