243970944 has 256 divisors, whose sum is σ = 828403200. Its totient is φ = 61931520.

The previous prime is 243970921. The next prime is 243970973. The reversal of 243970944 is 449079342.

It is a super-2 number, since 2×243970944² = 119043643032502272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 243970896 and 243970905.

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, 868084 + ... + 868364.

It is an arithmetic number, because the mean of its divisors is an integer number (3235950).

Almost surely, 2^243970944 is an apocalyptic number.

243970944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243970944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414201600).

243970944 is an abundant number, since it is smaller than the sum of its proper divisors (584432256).

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

243970944 is a wasteful number, since it uses less digits than its factorization.

243970944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 243970944 is about 15619.5692642275. The cubic root of 243970944 is about 624.8551719890.

The spelling of 243970944 in words is "two hundred forty-three million, nine hundred seventy thousand, nine hundred forty-four".