128645034 has 32 divisors (see below), whose sum is σ = 294414720. Its totient is φ = 36709632.

The previous prime is 128645021. The next prime is 128645039. The reversal of 128645034 is 430546821.

It is a super-2 number, since 2×128645034² = 33099089545722312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128644986 and 128645004.

It is not an unprimeable number, because it can be changed into a prime (128645039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46062 + ... + 48774.

It is an arithmetic number, because the mean of its divisors is an integer number (9200460).

Almost surely, 2^128645034 is an apocalyptic number.

128645034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128645034 is an abundant number, since it is smaller than the sum of its proper divisors (165769686).

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

128645034 is a wasteful number, since it uses less digits than its factorization.

128645034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3854.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 128645034 is about 11342.1794201996. The cubic root of 128645034 is about 504.8135559821.

The spelling of 128645034 in words is "one hundred twenty-eight million, six hundred forty-five thousand, thirty-four".