1233401400 has 432 divisors, whose sum is σ = 5209822800. Its totient is φ = 255974400.

The previous prime is 1233401387. The next prime is 1233401443. The reversal of 1233401400 is 41043321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1524196 + ... + 1525004.

It is an arithmetic number, because the mean of its divisors is an integer number (12059775).

Almost surely, 2^1233401400 is an apocalyptic number.

1233401400 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 1233401400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2604911400).

1233401400 is an abundant number, since it is smaller than the sum of its proper divisors (3976421400).

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

1233401400 is a wasteful number, since it uses less digits than its factorization.

1233401400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1233401400 is about 35119.8149197857. The cubic root of 1233401400 is about 1072.4280030565.

Adding to 1233401400 its reverse (41043321), we get a palindrome (1274444721).

The spelling of 1233401400 in words is "one billion, two hundred thirty-three million, four hundred one thousand, four hundred".