128901415 has 8 divisors (see below), whose sum is σ = 162822960. Its totient is φ = 97693632.

The previous prime is 128901413. The next prime is 128901427. The reversal of 128901415 is 514109821.

It is a happy number.

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 128901415 - 2¹ = 128901413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128901413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678334 + ... + 678523.

It is an arithmetic number, because the mean of its divisors is an integer number (20352870).

Almost surely, 2^128901415 is an apocalyptic number.

128901415 is a deficient number, since it is larger than the sum of its proper divisors (33921545).

128901415 is a wasteful number, since it uses less digits than its factorization.

128901415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356881.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 128901415 is about 11353.4758994768. The cubic root of 128901415 is about 505.1486867346.

The spelling of 128901415 in words is "one hundred twenty-eight million, nine hundred one thousand, four hundred fifteen".