243409430 has 32 divisors (see below), whose sum is σ = 478994688. Its totient is φ = 88322400.

The previous prime is 243409409. The next prime is 243409469. The reversal of 243409430 is 34904342.

It is a super-2 number, since 2×243409430² = 118496301225849800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 243409393 and 243409402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55415 + ... + 59645.

It is an arithmetic number, because the mean of its divisors is an integer number (14968584).

Almost surely, 2^243409430 is an apocalyptic number.

243409430 is a deficient number, since it is larger than the sum of its proper divisors (235585258).

243409430 is a wasteful number, since it uses less digits than its factorization.

243409430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 243409430 is about 15601.5842144316. The cubic root of 243409430 is about 624.3754229869.

The spelling of 243409430 in words is "two hundred forty-three million, four hundred nine thousand, four hundred thirty".