128902501 has 8 divisors (see below), whose sum is σ = 158649344. Its totient is φ = 101988720.

The previous prime is 128902489. The next prime is 128902513. The reversal of 128902501 is 105209821.

It is an interprime number because it is at equal distance from previous prime (128902489) and next prime (128902513).

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

It is a cyclic number.

It is not a de Polignac number, because 128902501 - 2⁵ = 128902469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128902501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128902531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708165 + ... + 708346.

It is an arithmetic number, because the mean of its divisors is an integer number (19831168).

Almost surely, 2^128902501 is an apocalyptic number.

It is an amenable number.

128902501 is a deficient number, since it is larger than the sum of its proper divisors (29746843).

128902501 is a wasteful number, since it uses less digits than its factorization.

128902501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416531.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 128902501 is about 11353.5237261389. The cubic root of 128902501 is about 505.1501053638.

The spelling of 128902501 in words is "one hundred twenty-eight million, nine hundred two thousand, five hundred one".