128283494 has 4 divisors (see below), whose sum is σ = 192425244. Its totient is φ = 64141746.

The previous prime is 128283481. The next prime is 128283511. The reversal of 128283494 is 494382821.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×128283494³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32070872 + ... + 32070875.

It is an arithmetic number, because the mean of its divisors is an integer number (48106311).

Almost surely, 2^128283494 is an apocalyptic number.

128283494 is a deficient number, since it is larger than the sum of its proper divisors (64141750).

128283494 is an equidigital number, since it uses as much as digits as its factorization.

128283494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64141749.

The product of its digits is 110592, while the sum is 41.

The square root of 128283494 is about 11326.2303525930. The cubic root of 128283494 is about 504.3402081750.

The spelling of 128283494 in words is "one hundred twenty-eight million, two hundred eighty-three thousand, four hundred ninety-four".