243152020 has 24 divisors (see below), whose sum is σ = 540656424. Its totient is φ = 91539456.

The previous prime is 243152011. The next prime is 243152027. The reversal of 243152020 is 20251342.

It can be written as a sum of positive squares in 4 ways, for example, as 24940036 + 218211984 = 4994^2 + 14772^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243152027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357237 + ... + 357916.

It is an arithmetic number, because the mean of its divisors is an integer number (22527351).

Almost surely, 2^243152020 is an apocalyptic number.

243152020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243152020 is an abundant number, since it is smaller than the sum of its proper divisors (297504404).

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

243152020 is a wasteful number, since it uses less digits than its factorization.

243152020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715179 (or 715177 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 243152020 is about 15593.3325495226. The cubic root of 243152020 is about 624.1552491480.

It can be divided in two parts, 24315 and 2020, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 243152020 in words is "two hundred forty-three million, one hundred fifty-two thousand, twenty".