1083272400 has 720 divisors, whose sum is σ = 4732732800. Its totient is φ = 234178560.

The previous prime is 1083272381. The next prime is 1083272413. The reversal of 1083272400 is 42723801.

It is a tau number, because it is divible by the number of its divisors (720).

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 (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12171556 + ... + 12171644.

It is an arithmetic number, because the mean of its divisors is an integer number (6573240).

Almost surely, 2^1083272400 is an apocalyptic number.

1083272400 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 1083272400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2366366400).

1083272400 is an abundant number, since it is smaller than the sum of its proper divisors (3649460400).

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

1083272400 is a wasteful number, since it uses less digits than its factorization.

1083272400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1083272400 is about 32913.1037734213. The cubic root of 1083272400 is about 1027.0207685801.

The spelling of 1083272400 in words is "one billion, eighty-three million, two hundred seventy-two thousand, four hundred".