128917416 has 32 divisors (see below), whose sum is σ = 326712960. Its totient is φ = 42383232.

The previous prime is 128917403. The next prime is 128917421. The reversal of 128917416 is 614719821.

It is an unprimeable number.

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, 35040 + ... + 38543.

It is an arithmetic number, because the mean of its divisors is an integer number (10209780).

Almost surely, 2^128917416 is an apocalyptic number.

It is an amenable number.

128917416 is an abundant number, since it is smaller than the sum of its proper divisors (197795544).

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

128917416 is a wasteful number, since it uses less digits than its factorization.

128917416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73665 (or 73661 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 128917416 is about 11354.1805516735. The cubic root of 128917416 is about 505.1695878491.

The spelling of 128917416 in words is "one hundred twenty-eight million, nine hundred seventeen thousand, four hundred sixteen".