1126897920 has 216 divisors, whose sum is σ = 4044470976. Its totient is φ = 300423168.

The previous prime is 1126897907. The next prime is 1126897939. The reversal of 1126897920 is 297986211.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309229 + ... + 312851.

Almost surely, 2^1126897920 is an apocalyptic number.

1126897920 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 1126897920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2022235488).

1126897920 is an abundant number, since it is smaller than the sum of its proper divisors (2917573056).

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

1126897920 is an frugal number, since it uses more digits than its factorization.

1126897920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659 (or 3633 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1126897920 is about 33569.3002608038. The cubic root of 1126897920 is about 1040.6264470396.

The spelling of 1126897920 in words is "one billion, one hundred twenty-six million, eight hundred ninety-seven thousand, nine hundred twenty".