128344004 has 6 divisors (see below), whose sum is σ = 224602014. Its totient is φ = 64172000.

The previous prime is 128343991. The next prime is 128344019. The reversal of 128344004 is 400443821.

It can be written as a sum of positive squares in only one way, i.e., 112360000 + 15984004 = 10600^2 + 3998^2 .

It is a super-3 number, since 3×128344004³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16042997 + ... + 16043004.

It is an arithmetic number, because the mean of its divisors is an integer number (37433669).

Almost surely, 2^128344004 is an apocalyptic number.

It is an amenable number.

128344004 is a deficient number, since it is larger than the sum of its proper divisors (96258010).

128344004 is a wasteful number, since it uses less digits than its factorization.

128344004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32086005 (or 32086003 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 128344004 is about 11328.9012706440. The cubic root of 128344004 is about 504.4194930672.

Adding to 128344004 its reverse (400443821), we get a palindrome (528787825).

The spelling of 128344004 in words is "one hundred twenty-eight million, three hundred forty-four thousand, four".