243020628 has 48 divisors (see below), whose sum is σ = 630947520. Its totient is φ = 80892000.

The previous prime is 243020567. The next prime is 243020629. The reversal of 243020628 is 826020342.

243020628 is a `hidden beast` number, since 2 + 4 + 30 + 2 + 0 + 628 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243020629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112438 + ... + 114578.

It is an arithmetic number, because the mean of its divisors is an integer number (13144740).

Almost surely, 2^243020628 is an apocalyptic number.

It is an amenable number.

243020628 is an abundant number, since it is smaller than the sum of its proper divisors (387926892).

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

243020628 is a wasteful number, since it uses less digits than its factorization.

243020628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205 (or 3197 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 243020628 is about 15589.1188974874. The cubic root of 243020628 is about 624.0428040164.

The spelling of 243020628 in words is "two hundred forty-three million, twenty thousand, six hundred twenty-eight".