1091200896 has 320 divisors, whose sum is σ = 3545609760. Its totient is φ = 331776000.

The previous prime is 1091200871. The next prime is 1091200909. The reversal of 1091200896 is 6980021901.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1091200896.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7226421 + ... + 7226571.

Almost surely, 2^1091200896 is an apocalyptic number.

1091200896 is a gapful number since it is divisible by the number (16) 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 1091200896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1772804880).

1091200896 is an abundant number, since it is smaller than the sum of its proper divisors (2454408864).

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

1091200896 is a wasteful number, since it uses less digits than its factorization.

1091200896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1091200896 is about 33033.3300773628. The cubic root of 1091200896 is about 1029.5202768075.

The spelling of 1091200896 in words is "one billion, ninety-one million, two hundred thousand, eight hundred ninety-six".