128428674 has 24 divisors (see below), whose sum is σ = 282332400. Its totient is φ = 38917560.

The previous prime is 128428667. The next prime is 128428717. The reversal of 128428674 is 476824821.

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, 87724 + ... + 89175.

It is an arithmetic number, because the mean of its divisors is an integer number (11763850).

Almost surely, 2^128428674 is an apocalyptic number.

128428674 is an abundant number, since it is smaller than the sum of its proper divisors (153903726).

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

128428674 is a wasteful number, since it uses less digits than its factorization.

128428674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176926 (or 176915 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 128428674 is about 11332.6375570738. The cubic root of 128428674 is about 504.5303924435.

The spelling of 128428674 in words is "one hundred twenty-eight million, four hundred twenty-eight thousand, six hundred seventy-four".