128750734 has 36 divisors (see below), whose sum is σ = 235409544. Its totient is φ = 52558968.

The previous prime is 128750681. The next prime is 128750747. The reversal of 128750734 is 437057821.

It is a junction number, because it is equal to n+sod(n) for n = 128750693 and 128750702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 538587 + ... + 538825.

It is an arithmetic number, because the mean of its divisors is an integer number (6539154).

Almost surely, 2^128750734 is an apocalyptic number.

128750734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128750734 is a deficient number, since it is larger than the sum of its proper divisors (106658810).

128750734 is an equidigital number, since it uses as much as digits as its factorization.

128750734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 128750734 is about 11346.8380617686. The cubic root of 128750734 is about 504.9517765931.

The spelling of 128750734 in words is "one hundred twenty-eight million, seven hundred fifty thousand, seven hundred thirty-four".