128976151 has 4 divisors (see below), whose sum is σ = 133136704. Its totient is φ = 124815600.

The previous prime is 128976121. The next prime is 128976163. The reversal of 128976151 is 151679821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128976151 - 2¹⁵ = 128943383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128976121) 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, 2080230 + ... + 2080291.

It is an arithmetic number, because the mean of its divisors is an integer number (33284176).

Almost surely, 2^128976151 is an apocalyptic number.

128976151 is a deficient number, since it is larger than the sum of its proper divisors (4160553).

128976151 is an equidigital number, since it uses as much as digits as its factorization.

128976151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160552.

The product of its digits is 30240, while the sum is 40.

The square root of 128976151 is about 11356.7667493878. The cubic root of 128976151 is about 505.2462949167.

The spelling of 128976151 in words is "one hundred twenty-eight million, nine hundred seventy-six thousand, one hundred fifty-one".