1097260920 has 288 divisors, whose sum is σ = 4393537200. Its totient is φ = 235984896.

The previous prime is 1097260897. The next prime is 1097260949. The reversal of 1097260920 is 290627901.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 298051 + ... + 301709.

Almost surely, 2^1097260920 is an apocalyptic number.

1097260920 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 1097260920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196768600).

1097260920 is an abundant number, since it is smaller than the sum of its proper divisors (3296276280).

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

1097260920 is a wasteful number, since it uses less digits than its factorization.

1097260920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707 (or 3693 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1097260920 is about 33124.9289810559. The cubic root of 1097260920 is about 1031.4225857708.

The spelling of 1097260920 in words is "one billion, ninety-seven million, two hundred sixty thousand, nine hundred twenty".