1232345400 has 384 divisors, whose sum is σ = 4589706240. Its totient is φ = 269568000.

The previous prime is 1232345383. The next prime is 1232345407. The reversal of 1232345400 is 45432321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232345407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4547265 + ... + 4547535.

It is an arithmetic number, because the mean of its divisors is an integer number (11952360).

Almost surely, 2^1232345400 is an apocalyptic number.

1232345400 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 1232345400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2294853120).

1232345400 is an abundant number, since it is smaller than the sum of its proper divisors (3357360840).

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

1232345400 is a wasteful number, since it uses less digits than its factorization.

1232345400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1232345400 is about 35104.7774526488. Note that the first 3 decimals coincide. The cubic root of 1232345400 is about 1072.1218558108.

Adding to 1232345400 its reverse (45432321), we get a palindrome (1277777721).

The spelling of 1232345400 in words is "one billion, two hundred thirty-two million, three hundred forty-five thousand, four hundred".