128901494 has 8 divisors (see below), whose sum is σ = 196075728. Its totient is φ = 63542920.

The previous prime is 128901481. The next prime is 128901523. The reversal of 128901494 is 494109821.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453737 + ... + 454020.

It is an arithmetic number, because the mean of its divisors is an integer number (24509466).

Almost surely, 2^128901494 is an apocalyptic number.

128901494 is a deficient number, since it is larger than the sum of its proper divisors (67174234).

128901494 is an equidigital number, since it uses as much as digits as its factorization.

128901494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907830.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 128901494 is about 11353.4793785870. The cubic root of 128901494 is about 505.1487899317.

The spelling of 128901494 in words is "one hundred twenty-eight million, nine hundred one thousand, four hundred ninety-four".