128947714 has 24 divisors (see below), whose sum is σ = 226376640. Its totient is φ = 54925416.

The previous prime is 128947697. The next prime is 128947727. The reversal of 128947714 is 417749821.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12427 + ... + 20305.

It is an arithmetic number, because the mean of its divisors is an integer number (9432360).

Almost surely, 2^128947714 is an apocalyptic number.

128947714 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128947714 is a deficient number, since it is larger than the sum of its proper divisors (97428926).

128947714 is a wasteful number, since it uses less digits than its factorization.

128947714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8062 (or 8055 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 128947714 is about 11355.5146955125. The cubic root of 128947714 is about 505.2091595113.

The spelling of 128947714 in words is "one hundred twenty-eight million, nine hundred forty-seven thousand, seven hundred fourteen".