128694192 has 80 divisors (see below), whose sum is σ = 364643328. Its totient is φ = 38787840.

The previous prime is 128694191. The next prime is 128694193. The reversal of 128694192 is 291496821.

It is an interprime number because it is at equal distance from previous prime (128694191) and next prime (128694193).

It is not an unprimeable number, because it can be changed into a prime (128694191) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 117198 + ... + 118290.

Almost surely, 2^128694192 is an apocalyptic number.

128694192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128694192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182321664).

128694192 is an abundant number, since it is smaller than the sum of its proper divisors (235949136).

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

128694192 is a wasteful number, since it uses less digits than its factorization.

128694192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1332 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 128694192 is about 11344.3462570569. The cubic root of 128694192 is about 504.8778477878.

The spelling of 128694192 in words is "one hundred twenty-eight million, six hundred ninety-four thousand, one hundred ninety-two".