128591954 has 8 divisors (see below), whose sum is σ = 193444848. Its totient is φ = 64110340.

The previous prime is 128591941. The next prime is 128591963. The reversal of 128591954 is 459195821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91952 + ... + 93339.

It is an arithmetic number, because the mean of its divisors is an integer number (24180606).

Almost surely, 2^128591954 is an apocalyptic number.

128591954 is a deficient number, since it is larger than the sum of its proper divisors (64852894).

128591954 is a wasteful number, since it uses less digits than its factorization.

128591954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185640.

The product of its digits is 129600, while the sum is 44.

The square root of 128591954 is about 11339.8392404831. The cubic root of 128591954 is about 504.7441163545.

It can be divided in two parts, 1285 and 91954, that added together give a palindrome (93239).

The spelling of 128591954 in words is "one hundred twenty-eight million, five hundred ninety-one thousand, nine hundred fifty-four".