128049346 has 4 divisors (see below), whose sum is σ = 192074022. Its totient is φ = 64024672.

The previous prime is 128049331. The next prime is 128049347. The reversal of 128049346 is 643940821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113188321 + 14861025 = 10639^2 + 3855^2 .

It is a super-2 number, since 2×128049346² = 32793270022055432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128049347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32012335 + ... + 32012338.

Almost surely, 2^128049346 is an apocalyptic number.

128049346 is a deficient number, since it is larger than the sum of its proper divisors (64024676).

128049346 is an equidigital number, since it uses as much as digits as its factorization.

128049346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64024675.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 128049346 is about 11315.8890945431. The cubic root of 128049346 is about 504.0331742042.

The spelling of 128049346 in words is "one hundred twenty-eight million, forty-nine thousand, three hundred forty-six".