230473440 has 144 divisors (see below), whose sum is σ = 813758400. Its totient is φ = 59329536.

The previous prime is 230473429. The next prime is 230473447. The reversal of 230473440 is 44374032.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230473447) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 39001 + ... + 44519.

It is an arithmetic number, because the mean of its divisors is an integer number (5651100).

Almost surely, 2^230473440 is an apocalyptic number.

230473440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230473440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406879200).

230473440 is an abundant number, since it is smaller than the sum of its proper divisors (583284960).

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

230473440 is a wasteful number, since it uses less digits than its factorization.

230473440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569 (or 5558 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 230473440 is about 15181.3517184736. The cubic root of 230473440 is about 613.1126752971.

The spelling of 230473440 in words is "two hundred thirty million, four hundred seventy-three thousand, four hundred forty".