128799315 has 20 divisors (see below), whose sum is σ = 230885424. Its totient is φ = 68692752.

The previous prime is 128799313. The next prime is 128799323. The reversal of 128799315 is 513997821.

It is not a de Polignac number, because 128799315 - 2¹ = 128799313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (128799311) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 158607 + ... + 159416.

Almost surely, 2^128799315 is an apocalyptic number.

128799315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128799315 is a deficient number, since it is larger than the sum of its proper divisors (102086109).

128799315 is an equidigital number, since it uses as much as digits as its factorization.

128799315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318040 (or 318031 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 128799315 is about 11348.9785884017. The cubic root of 128799315 is about 505.0152790855.

The spelling of 128799315 in words is "one hundred twenty-eight million, seven hundred ninety-nine thousand, three hundred fifteen".