128679830 has 16 divisors (see below), whose sum is σ = 232002144. Its totient is φ = 51387840.

The previous prime is 128679823. The next prime is 128679839. The reversal of 128679830 is 38976821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128679839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3887 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (14500134).

Almost surely, 2^128679830 is an apocalyptic number.

128679830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128679830 is a deficient number, since it is larger than the sum of its proper divisors (103322314).

128679830 is a wasteful number, since it uses less digits than its factorization.

128679830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21031.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 128679830 is about 11343.7132368550. The cubic root of 128679830 is about 504.8590659887.

The spelling of 128679830 in words is "one hundred twenty-eight million, six hundred seventy-nine thousand, eight hundred thirty".