243702930 has 128 divisors (see below), whose sum is σ = 644244480. Its totient is φ = 58786560.

The previous prime is 243702929. The next prime is 243702941. The reversal of 243702930 is 39207342.

It is a super-2 number, since 2×243702930² = 118782236181169800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 in 63 ways as a sum of consecutive naturals, for example, 1495029 + ... + 1495191.

It is an arithmetic number, because the mean of its divisors is an integer number (5033160).

Almost surely, 2^243702930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243702930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322122240).

243702930 is an abundant number, since it is smaller than the sum of its proper divisors (400541550).

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

243702930 is a wasteful number, since it uses less digits than its factorization.

243702930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 243702930 is about 15610.9874767742. The cubic root of 243702930 is about 624.6262768408.

The spelling of 243702930 in words is "two hundred forty-three million, seven hundred two thousand, nine hundred thirty".