128450758 has 12 divisors (see below), whose sum is σ = 194076540. Its totient is φ = 63759956.

The previous prime is 128450753. The next prime is 128450767. The reversal of 128450758 is 857054821.

It is a self number, because there is not a number n which added to its sum of digits gives 128450758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128450753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214143 + ... + 214741.

It is an arithmetic number, because the mean of its divisors is an integer number (16173045).

Almost surely, 2^128450758 is an apocalyptic number.

128450758 is a deficient number, since it is larger than the sum of its proper divisors (65625782).

128450758 is an frugal number, since it uses more digits than its factorization.

128450758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 128450758 is about 11333.6118691263. The cubic root of 128450758 is about 504.5593096893.

The spelling of 128450758 in words is "one hundred twenty-eight million, four hundred fifty thousand, seven hundred fifty-eight".