128204470 has 16 divisors (see below), whose sum is σ = 231159168. Its totient is φ = 51194880.

The previous prime is 128204459. The next prime is 128204491. The reversal of 128204470 is 74402821.

It is a super-2 number, since 2×128204470² = 32872772255961800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4491 + ... + 16630.

It is an arithmetic number, because the mean of its divisors is an integer number (14447448).

Almost surely, 2^128204470 is an apocalyptic number.

128204470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128204470 is a deficient number, since it is larger than the sum of its proper divisors (102954698).

128204470 is a wasteful number, since it uses less digits than its factorization.

128204470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21735.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 128204470 is about 11322.7412758572. The cubic root of 128204470 is about 504.2366272547.

The spelling of 128204470 in words is "one hundred twenty-eight million, two hundred four thousand, four hundred seventy".