128823414 has 32 divisors (see below), whose sum is σ = 277530624. Its totient is φ = 39747840.

The previous prime is 128823413. The next prime is 128823421. The reversal of 128823414 is 414328821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128823413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10779 + ... + 19334.

It is an arithmetic number, because the mean of its divisors is an integer number (8672832).

Almost surely, 2^128823414 is an apocalyptic number.

128823414 is an abundant number, since it is smaller than the sum of its proper divisors (148707210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128823414 is a wasteful number, since it uses less digits than its factorization.

128823414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30172.

The product of its digits is 12288, while the sum is 33.

The square root of 128823414 is about 11350.0402642458. The cubic root of 128823414 is about 505.0467740880.

The spelling of 128823414 in words is "one hundred twenty-eight million, eight hundred twenty-three thousand, four hundred fourteen".