243402354 has 64 divisors (see below), whose sum is σ = 598308480. Its totient is φ = 72861120.

The previous prime is 243402349. The next prime is 243402361. The reversal of 243402354 is 453204342.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21289 + ... + 30659.

It is an arithmetic number, because the mean of its divisors is an integer number (9348570).

Almost surely, 2^243402354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243402354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299154240).

243402354 is an abundant number, since it is smaller than the sum of its proper divisors (354906126).

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

243402354 is a wasteful number, since it uses less digits than its factorization.

243402354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9432 (or 9426 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 243402354 is about 15601.3574409408. The cubic root of 243402354 is about 624.3693726553.

Adding to 243402354 its reverse (453204342), we get a palindrome (696606696).

The spelling of 243402354 in words is "two hundred forty-three million, four hundred two thousand, three hundred fifty-four".