128197276 has 24 divisors (see below), whose sum is σ = 236977664. Its totient is φ = 60585840.

The previous prime is 128197261. The next prime is 128197297. The reversal of 128197276 is 672791821.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6690 + ... + 17353.

Almost surely, 2^128197276 is an apocalyptic number.

It is an amenable number.

128197276 is a deficient number, since it is larger than the sum of its proper divisors (108780388).

128197276 is a wasteful number, since it uses less digits than its factorization.

128197276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24121 (or 24119 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The square root of 128197276 is about 11322.4235921467. The cubic root of 128197276 is about 504.2271955862.

The spelling of 128197276 in words is "one hundred twenty-eight million, one hundred ninety-seven thousand, two hundred seventy-six".