234543490128 has 240 divisors, whose sum is σ = 692971718400. Its totient is φ = 73980011520.

The previous prime is 234543490063. The next prime is 234543490141. The reversal of 234543490128 is 821094345432.

234543490128 is a `hidden beast` number, since 2 + 3 + 4 + 5 + 434 + 90 + 128 = 666.

It is a super-2 number, since 2×234543490128² (a number of 24 digits) 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 47 ways as a sum of consecutive naturals, for example, 24353218 + ... + 24362846.

It is an arithmetic number, because the mean of its divisors is an integer number (2887382160).

Almost surely, 2^234543490128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 234543490128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346485859200).

234543490128 is an abundant number, since it is smaller than the sum of its proper divisors (458428228272).

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

234543490128 is a wasteful number, since it uses less digits than its factorization.

234543490128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9810 (or 9801 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 234543490128 in words is "two hundred thirty-four billion, five hundred forty-three million, four hundred ninety thousand, one hundred twenty-eight".