243128088 has 128 divisors (see below), whose sum is σ = 779212800. Its totient is φ = 68802048.

The previous prime is 243128087. The next prime is 243128089. The reversal of 243128088 is 880821342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243128087) and next prime (243128089).

It is a super-2 number, since 2×243128088² = 118222534349071488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243128087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170145 + ... + 171567.

It is an arithmetic number, because the mean of its divisors is an integer number (6087600).

Almost surely, 2^243128088 is an apocalyptic number.

243128088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243128088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389606400).

243128088 is an abundant number, since it is smaller than the sum of its proper divisors (536084712).

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

243128088 is a wasteful number, since it uses less digits than its factorization.

243128088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 243128088 is about 15592.5651513790. The cubic root of 243128088 is about 624.1347711860.

It can be divided in two parts, 24312 and 8088, that added together give a square (32400 = 180²).

The spelling of 243128088 in words is "two hundred forty-three million, one hundred twenty-eight thousand, eighty-eight".