1111606400 has 192 divisors, whose sum is σ = 2959632000. Its totient is φ = 411217920.

The previous prime is 1111606369. The next prime is 1111606409. The reversal of 1111606400 is 46061111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111606409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2857406 + ... + 2857794.

It is an arithmetic number, because the mean of its divisors is an integer number (15414750).

Almost surely, 2^1111606400 is an apocalyptic number.

1111606400 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 1111606400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1479816000).

1111606400 is an abundant number, since it is smaller than the sum of its proper divisors (1848025600).

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

1111606400 is a wasteful number, since it uses less digits than its factorization.

1111606400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1111606400 is about 33340.7618389262. The cubic root of 1111606400 is about 1035.8980435633.

Adding to 1111606400 its reverse (46061111), we get a palindrome (1157667511).

The spelling of 1111606400 in words is "one billion, one hundred eleven million, six hundred six thousand, four hundred".