128505034 has 16 divisors (see below), whose sum is σ = 223084800. Its totient is φ = 54375984.

The previous prime is 128505031. The next prime is 128505067. The reversal of 128505034 is 430505821.

It is a junction number, because it is equal to n+sod(n) for n = 128504993 and 128505011.

It is not an unprimeable number, because it can be changed into a prime (128505031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56989 + ... + 59200.

It is an arithmetic number, because the mean of its divisors is an integer number (13942800).

Almost surely, 2^128505034 is an apocalyptic number.

128505034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128505034 is a deficient number, since it is larger than the sum of its proper divisors (94579766).

128505034 is a wasteful number, since it uses less digits than its factorization.

128505034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116277.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 128505034 is about 11336.0060868015. The cubic root of 128505034 is about 504.6303657247.

The spelling of 128505034 in words is "one hundred twenty-eight million, five hundred five thousand, thirty-four".