128456674 has 16 divisors (see below), whose sum is σ = 198272448. Its totient is φ = 62372592.

The previous prime is 128456651. The next prime is 128456681. The reversal of 128456674 is 476654821.

It is a super-2 number, since 2×128456674² = 33002234190284552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128456674.

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, 46537 + ... + 49219.

It is an arithmetic number, because the mean of its divisors is an integer number (12392028).

Almost surely, 2^128456674 is an apocalyptic number.

128456674 is a deficient number, since it is larger than the sum of its proper divisors (69815774).

128456674 is a wasteful number, since it uses less digits than its factorization.

128456674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369.

The product of its digits is 322560, while the sum is 43.

The square root of 128456674 is about 11333.8728597069. The cubic root of 128456674 is about 504.5670556590.

The spelling of 128456674 in words is "one hundred twenty-eight million, four hundred fifty-six thousand, six hundred seventy-four".