128504590 has 8 divisors (see below), whose sum is σ = 231308280. Its totient is φ = 51401832.

The previous prime is 128504587. The next prime is 128504591. The reversal of 128504590 is 95405821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128504591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6425220 + ... + 6425239.

It is an arithmetic number, because the mean of its divisors is an integer number (28913535).

Almost surely, 2^128504590 is an apocalyptic number.

128504590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128504590 is a deficient number, since it is larger than the sum of its proper divisors (102803690).

128504590 is a wasteful number, since it uses less digits than its factorization.

128504590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12850466.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 128504590 is about 11335.9865031677. The cubic root of 128504590 is about 504.6297845383.

The spelling of 128504590 in words is "one hundred twenty-eight million, five hundred four thousand, five hundred ninety".