243061390 has 64 divisors (see below), whose sum is σ = 530675712. Its totient is φ = 78940800.

The previous prime is 243061387. The next prime is 243061397. The reversal of 243061390 is 93160342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243061397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41589 + ... + 47071.

It is an arithmetic number, because the mean of its divisors is an integer number (8291808).

Almost surely, 2^243061390 is an apocalyptic number.

243061390 is an abundant number, since it is smaller than the sum of its proper divisors (287614322).

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

243061390 is a wasteful number, since it uses less digits than its factorization.

243061390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 243061390 is about 15590.4262289393. The cubic root of 243061390 is about 624.0776924275.

The spelling of 243061390 in words is "two hundred forty-three million, sixty-one thousand, three hundred ninety".