128673470 has 16 divisors (see below), whose sum is σ = 232348608. Its totient is φ = 51305760.

The previous prime is 128673469. The next prime is 128673511. The reversal of 128673470 is 74376821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17126 + ... + 23465.

It is an arithmetic number, because the mean of its divisors is an integer number (14521788).

Almost surely, 2^128673470 is an apocalyptic number.

128673470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128673470 is a deficient number, since it is larger than the sum of its proper divisors (103675138).

128673470 is a wasteful number, since it uses less digits than its factorization.

128673470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40915.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 128673470 is about 11343.4329019041. The cubic root of 128673470 is about 504.8507482993.

The spelling of 128673470 in words is "one hundred twenty-eight million, six hundred seventy-three thousand, four hundred seventy".