128982995 has 16 divisors (see below), whose sum is σ = 164475360. Its totient is φ = 96766464.

The previous prime is 128982991. The next prime is 128983009. The reversal of 128982995 is 599289821.

It is a cyclic number.

It is not a de Polignac number, because 128982995 - 2² = 128982991 is a prime.

It is a super-2 number, since 2×128982995² = 33273225998340050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128982991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22316 + ... + 27494.

It is an arithmetic number, because the mean of its divisors is an integer number (10279710).

Almost surely, 2^128982995 is an apocalyptic number.

128982995 is a deficient number, since it is larger than the sum of its proper divisors (35492365).

128982995 is a wasteful number, since it uses less digits than its factorization.

128982995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494.

The product of its digits is 933120, while the sum is 53.

The square root of 128982995 is about 11357.0680635453. The cubic root of 128982995 is about 505.2552315675.

The spelling of 128982995 in words is "one hundred twenty-eight million, nine hundred eighty-two thousand, nine hundred ninety-five".