128610692 has 72 divisors (see below), whose sum is σ = 275482368. Its totient is φ = 52315200.

The previous prime is 128610689. The next prime is 128610719. The reversal of 128610692 is 296016821.

It is a zygodrome in base 3.

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 23 ways as a sum of consecutive naturals, for example, 370463 + ... + 370809.

It is an arithmetic number, because the mean of its divisors is an integer number (3826144).

Almost surely, 2^128610692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128610692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137741184).

128610692 is an abundant number, since it is smaller than the sum of its proper divisors (146871676).

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

128610692 is a wasteful number, since it uses less digits than its factorization.

128610692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 128610692 is about 11340.6654125761. The cubic root of 128610692 is about 504.7686317191.

The spelling of 128610692 in words is "one hundred twenty-eight million, six hundred ten thousand, six hundred ninety-two".