243641432 has 8 divisors (see below), whose sum is σ = 456827700. Its totient is φ = 121820712.

The previous prime is 243641423. The next prime is 243641449. The reversal of 243641432 is 234146342.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×243641432² = 118722294774021248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243641395 and 243641404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15227582 + ... + 15227597.

Almost surely, 2^243641432 is an apocalyptic number.

It is an amenable number.

243641432 is a deficient number, since it is larger than the sum of its proper divisors (213186268).

243641432 is a wasteful number, since it uses less digits than its factorization.

243641432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30455185 (or 30455181 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 243641432 is about 15609.0176500637. The cubic root of 243641432 is about 624.5737313114.

Adding to 243641432 its reverse (234146342), we get a palindrome (477787774).

The spelling of 243641432 in words is "two hundred forty-three million, six hundred forty-one thousand, four hundred thirty-two".