128674650 has 192 divisors, whose sum is σ = 379975680. Its totient is φ = 28512000.

The previous prime is 128674643. The next prime is 128674657. The reversal of 128674650 is 56476821.

It is an interprime number because it is at equal distance from previous prime (128674643) and next prime (128674657).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 128674599 and 128674608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128674657) 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 95 ways as a sum of consecutive naturals, for example, 852075 + ... + 852225.

It is an arithmetic number, because the mean of its divisors is an integer number (1979040).

Almost surely, 2^128674650 is an apocalyptic number.

128674650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128674650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189987840).

128674650 is an abundant number, since it is smaller than the sum of its proper divisors (251301030).

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

128674650 is a wasteful number, since it uses less digits than its factorization.

128674650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 128674650 is about 11343.4849142581. The cubic root of 128674650 is about 504.8522915391.

The spelling of 128674650 in words is "one hundred twenty-eight million, six hundred seventy-four thousand, six hundred fifty".