243150390 has 128 divisors (see below), whose sum is σ = 747601920. Its totient is φ = 55085184.

The previous prime is 243150389. The next prime is 243150407. The reversal of 243150390 is 93051342.

It is a super-2 number, since 2×243150390² = 118244224314304200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 239524 + ... + 240536.

It is an arithmetic number, because the mean of its divisors is an integer number (5840640).

Almost surely, 2^243150390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243150390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373800960).

243150390 is an abundant number, since it is smaller than the sum of its proper divisors (504451530).

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

243150390 is a wasteful number, since it uses less digits than its factorization.

243150390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 243150390 is about 15593.2802835067. The cubic root of 243150390 is about 624.1538544439.

The spelling of 243150390 in words is "two hundred forty-three million, one hundred fifty thousand, three hundred ninety".