1172465280 has 448 divisors, whose sum is σ = 4816195200. Its totient is φ = 267245568.

The previous prime is 1172465269. The next prime is 1172465339. The reversal of 1172465280 is 825642711.

1172465280 is a `hidden beast` number, since 1 + 172 + 465 + 28 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

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

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3265741 + ... + 3266099.

It is a vampire number, since it can be written as 22617 ⋅ 51840 (with its own digits).

Almost surely, 2^1172465280 is an apocalyptic number.

1172465280 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 1172465280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2408097600).

1172465280 is an abundant number, since it is smaller than the sum of its proper divisors (3643729920).

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

1172465280 is an frugal number, since it uses more digits than its factorization.

1172465280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1172465280 is about 34241.2803498935. The cubic root of 1172465280 is about 1054.4678193126.

The spelling of 1172465280 in words is "one billion, one hundred seventy-two million, four hundred sixty-five thousand, two hundred eighty".