243408154428 has 72 divisors (see below), whose sum is σ = 643420796928. Its totient is φ = 77440654368.

The previous prime is 243408154417. The next prime is 243408154433. The reversal of 243408154428 is 824451804342.

243408154428 is a `hidden beast` number, since 2 + 4 + 3 + 4 + 0 + 81 + 544 + 28 = 666.

243408154428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65901 + ... + 700827.

Almost surely, 2^243408154428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243408154428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321710398464).

243408154428 is an abundant number, since it is smaller than the sum of its proper divisors (400012642500).

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

243408154428 is a wasteful number, since it uses less digits than its factorization.

243408154428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635423 (or 635418 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 45.

The spelling of 243408154428 in words is "two hundred forty-three billion, four hundred eight million, one hundred fifty-four thousand, four hundred twenty-eight".