128077430 has 64 divisors (see below), whose sum is σ = 260983296. Its totient is φ = 44928000.

The previous prime is 128077429. The next prime is 128077447. The reversal of 128077430 is 34770821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245570 + ... + 246090.

It is an arithmetic number, because the mean of its divisors is an integer number (4077864).

Almost surely, 2^128077430 is an apocalyptic number.

128077430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128077430 is an abundant number, since it is smaller than the sum of its proper divisors (132905866).

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

128077430 is a wasteful number, since it uses less digits than its factorization.

128077430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 128077430 is about 11317.1299365166. The cubic root of 128077430 is about 504.0700199812.

The spelling of 128077430 in words is "one hundred twenty-eight million, seventy-seven thousand, four hundred thirty".