1121936400 has 480 divisors, whose sum is σ = 4404301440. Its totient is φ = 269568000.

The previous prime is 1121936393. The next prime is 1121936401. The reversal of 1121936400 is 46391211.

1121936400 is a `hidden beast` number, since 1 + 1 + 2 + 19 + 3 + 640 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1121936401) 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, 8564335 + ... + 8564465.

It is an arithmetic number, because the mean of its divisors is an integer number (9175628).

Almost surely, 2^1121936400 is an apocalyptic number.

1121936400 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 1121936400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2202150720).

1121936400 is an abundant number, since it is smaller than the sum of its proper divisors (3282365040).

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

1121936400 is a wasteful number, since it uses less digits than its factorization.

1121936400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1121936400 is about 33495.3190759545. The cubic root of 1121936400 is about 1039.0969725424.

The spelling of 1121936400 in words is "one billion, one hundred twenty-one million, nine hundred thirty-six thousand, four hundred".