128746346 has 4 divisors (see below), whose sum is σ = 193119522. Its totient is φ = 64373172.

The previous prime is 128746307. The next prime is 128746351. The reversal of 128746346 is 643647821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643647821 = 233 ⋅2762437.

It can be written as a sum of positive squares in only one way, i.e., 107226025 + 21520321 = 10355^2 + 4639^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32186585 + ... + 32186588.

Almost surely, 2^128746346 is an apocalyptic number.

128746346 is a deficient number, since it is larger than the sum of its proper divisors (64373176).

128746346 is an equidigital number, since it uses as much as digits as its factorization.

128746346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64373175.

The product of its digits is 193536, while the sum is 41.

The square root of 128746346 is about 11346.6447022897. The cubic root of 128746346 is about 504.9460400470.

The spelling of 128746346 in words is "one hundred twenty-eight million, seven hundred forty-six thousand, three hundred forty-six".