243006128238 has 64 divisors (see below), whose sum is σ = 500452992000. Its totient is φ = 78625652352.

The previous prime is 243006128207. The next prime is 243006128263. The reversal of 243006128238 is 832821600342.

It is a super-2 number, since 2×243006128238² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243006128196 and 243006128205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24921388 + ... + 24931136.

It is an arithmetic number, because the mean of its divisors is an integer number (7819578000).

Almost surely, 2^243006128238 is an apocalyptic number.

243006128238 is an abundant number, since it is smaller than the sum of its proper divisors (257446863762).

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

243006128238 is a wasteful number, since it uses less digits than its factorization.

243006128238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10521.

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 243006128238 in words is "two hundred forty-three billion, six million, one hundred twenty-eight thousand, two hundred thirty-eight".