128982738 has 8 divisors (see below), whose sum is σ = 257965488. Its totient is φ = 42994244.

The previous prime is 128982727. The next prime is 128982739. The reversal of 128982738 is 837289821.

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

128982738 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (128982739) 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, 10748556 + ... + 10748567.

It is an arithmetic number, because the mean of its divisors is an integer number (32245686).

Almost surely, 2^128982738 is an apocalyptic number.

128982738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128982738 is a wasteful number, since it uses less digits than its factorization.

128982738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21497128.

The product of its digits is 387072, while the sum is 48.

The square root of 128982738 is about 11357.0567489997. The cubic root of 128982738 is about 505.2548959918.

The spelling of 128982738 in words is "one hundred twenty-eight million, nine hundred eighty-two thousand, seven hundred thirty-eight".