128471801 has 6 divisors (see below), whose sum is σ = 129178350. Its totient is φ = 127769088.

The previous prime is 128471753. The next prime is 128471867. The reversal of 128471801 is 108174821.

It can be written as a sum of positive squares in 3 ways, for example, as 6943225 + 121528576 = 2635^2 + 11024^2 .

It is not a de Polignac number, because 128471801 - 2¹⁸ = 128209657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128471201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35525 + ... + 38973.

It is an arithmetic number, because the mean of its divisors is an integer number (21529725).

Almost surely, 2^128471801 is an apocalyptic number.

It is an amenable number.

128471801 is a deficient number, since it is larger than the sum of its proper divisors (706549).

128471801 is an frugal number, since it uses more digits than its factorization.

128471801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835 (or 3642 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 128471801 is about 11334.5401759401. The cubic root of 128471801 is about 504.5868607446.

The spelling of 128471801 in words is "one hundred twenty-eight million, four hundred seventy-one thousand, eight hundred one".