1230433440 has 96 divisors (see below), whose sum is σ = 3939497856. Its totient is φ = 322728960.

The previous prime is 1230433403. The next prime is 1230433447. The reversal of 1230433440 is 443340321.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1230433440.

It is not an unprimeable number, because it can be changed into a prime (1230433447) 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, 8269 + ... + 50291.

It is an arithmetic number, because the mean of its divisors is an integer number (41036436).

Almost surely, 2^1230433440 is an apocalyptic number.

1230433440 is a gapful number since it is divisible by the number (10) 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 1230433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969748928).

1230433440 is an abundant number, since it is smaller than the sum of its proper divisors (2709064416).

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

1230433440 is a wasteful number, since it uses less digits than its factorization.

1230433440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42102 (or 42094 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1230433440 is about 35077.5346910241. The cubic root of 1230433440 is about 1071.5671100604.

Adding to 1230433440 its reverse (443340321), we get a palindrome (1673773761).

The spelling of 1230433440 in words is "one billion, two hundred thirty million, four hundred thirty-three thousand, four hundred forty".