128454430 has 16 divisors (see below), whose sum is σ = 249004224. Its totient is φ = 47429280.

The previous prime is 128454419. The next prime is 128454437. The reversal of 128454430 is 34454821.

It is a junction number, because it is equal to n+sod(n) for n = 128454392 and 128454401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128454437) 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, 493926 + ... + 494185.

It is an arithmetic number, because the mean of its divisors is an integer number (15562764).

Almost surely, 2^128454430 is an apocalyptic number.

128454430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128454430 is a deficient number, since it is larger than the sum of its proper divisors (120549794).

128454430 is a wasteful number, since it uses less digits than its factorization.

128454430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988131.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 128454430 is about 11333.7738639872. The cubic root of 128454430 is about 504.5641175606.

The spelling of 128454430 in words is "one hundred twenty-eight million, four hundred fifty-four thousand, four hundred thirty".