243605628 has 72 divisors (see below), whose sum is σ = 705231072. Its totient is φ = 69455232.

The previous prime is 243605623. The next prime is 243605629. The reversal of 243605628 is 826506342.

243605628 is a `hidden beast` number, since 2 + 43 + 605 + 6 + 2 + 8 = 666.

243605628 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 243605592 and 243605601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243605623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190126 + ... + 191402.

It is an arithmetic number, because the mean of its divisors is an integer number (9794876).

Almost surely, 2^243605628 is an apocalyptic number.

243605628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

243605628 is an abundant number, since it is smaller than the sum of its proper divisors (461625444).

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

243605628 is a wasteful number, since it uses less digits than its factorization.

243605628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 243605628 is about 15607.8707067941. The cubic root of 243605628 is about 624.5431353475.

The spelling of 243605628 in words is "two hundred forty-three million, six hundred five thousand, six hundred twenty-eight".