128247404 has 12 divisors (see below), whose sum is σ = 224515704. Its totient is φ = 64100064.

The previous prime is 128247401. The next prime is 128247407. The reversal of 128247404 is 404742821.

It is an interprime number because it is at equal distance from previous prime (128247401) and next prime (128247407).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (128247401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13067 + ... + 20669.

It is an arithmetic number, because the mean of its divisors is an integer number (18709642).

Almost surely, 2^128247404 is an apocalyptic number.

It is an amenable number.

128247404 is a deficient number, since it is larger than the sum of its proper divisors (96268300).

128247404 is a wasteful number, since it uses less digits than its factorization.

128247404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11824 (or 11822 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 128247404 is about 11324.6370361261. The cubic root of 128247404 is about 504.2929083894.

The spelling of 128247404 in words is "one hundred twenty-eight million, two hundred forty-seven thousand, four hundred four".