2097809280 has 768 divisors, whose sum is σ = 8982005760. Its totient is φ = 457850880.

The previous prime is 2097809257. The next prime is 2097809303. The reversal of 2097809280 is 829087902.

It is an interprime number because it is at equal distance from previous prime (2097809257) and next prime (2097809303).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44634217 + ... + 44634263.

It is an arithmetic number, because the mean of its divisors is an integer number (11695320).

Almost surely, 2^2097809280 is an apocalyptic number.

2097809280 is a gapful number since it is divisible by the number (20) 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 2097809280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4491002880).

2097809280 is an abundant number, since it is smaller than the sum of its proper divisors (6884196480).

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

2097809280 is an equidigital number, since it uses as much as digits as its factorization.

2097809280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 2097809280 is about 45801.8479976518. The cubic root of 2097809280 is about 1280.1337099904.

The spelling of 2097809280 in words is "two billion, ninety-seven million, eight hundred nine thousand, two hundred eighty".