128154930 has 64 divisors (see below), whose sum is σ = 325334016. Its totient is φ = 32256000.

The previous prime is 128154913. The next prime is 128154937. The reversal of 128154930 is 39451821.

It is a junction number, because it is equal to n+sod(n) for n = 128154891 and 128154900.

It is not an unprimeable number, because it can be changed into a prime (128154937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36450 + ... + 39810.

It is an arithmetic number, because the mean of its divisors is an integer number (5083344).

Almost surely, 2^128154930 is an apocalyptic number.

128154930 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 128154930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162667008).

128154930 is an abundant number, since it is smaller than the sum of its proper divisors (197179086).

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

128154930 is a wasteful number, since it uses less digits than its factorization.

128154930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 128154930 is about 11320.5534317011. The cubic root of 128154930 is about 504.1716708593.

The spelling of 128154930 in words is "one hundred twenty-eight million, one hundred fifty-four thousand, nine hundred thirty".