128571430 has 16 divisors (see below), whose sum is σ = 249231024. Its totient is φ = 47472480.

The previous prime is 128571383. The next prime is 128571431. The reversal of 128571430 is 34175821.

It is a super-4 number, since 4×128571430⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 128571392 and 128571401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128571431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494376 + ... + 494635.

It is an arithmetic number, because the mean of its divisors is an integer number (15576939).

Almost surely, 2^128571430 is an apocalyptic number.

128571430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128571430 is a deficient number, since it is larger than the sum of its proper divisors (120659594).

128571430 is a wasteful number, since it uses less digits than its factorization.

128571430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989031.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 128571430 is about 11338.9342532709. The cubic root of 128571430 is about 504.7172615913.

The spelling of 128571430 in words is "one hundred twenty-eight million, five hundred seventy-one thousand, four hundred thirty".