128449130 has 8 divisors (see below), whose sum is σ = 231208452. Its totient is φ = 51379648.

The previous prime is 128449129. The next prime is 128449133. The reversal of 128449130 is 31944821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128165041 + 284089 = 11321^2 + 533^2 .

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

It is not an unprimeable number, because it can be changed into a prime (128449133) 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, 6422447 + ... + 6422466.

Almost surely, 2^128449130 is an apocalyptic number.

128449130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128449130 is a deficient number, since it is larger than the sum of its proper divisors (102759322).

128449130 is a wasteful number, since it uses less digits than its factorization.

128449130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12844920.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 128449130 is about 11333.5400471344. The cubic root of 128449130 is about 504.5571780656.

The spelling of 128449130 in words is "one hundred twenty-eight million, four hundred forty-nine thousand, one hundred thirty".