2173401280 has 56 divisors (see below), whose sum is σ = 5200101360. Its totient is φ = 865213440.

The previous prime is 2173401257. The next prime is 2173401287. The reversal of 2173401280 is 821043712.

It is a super-3 number, since 3×2173401280³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2173401287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51426 + ... + 83614.

Almost surely, 2^2173401280 is an apocalyptic number.

2173401280 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 2173401280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600050680).

2173401280 is an abundant number, since it is smaller than the sum of its proper divisors (3026700080).

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

2173401280 is a wasteful number, since it uses less digits than its factorization.

2173401280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32417 (or 32407 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2173401280 is about 46619.7520370926. The cubic root of 2173401280 is about 1295.3286544786.

Adding to 2173401280 its reverse (821043712), we get a palindrome (2994444992).

The spelling of 2173401280 in words is "two billion, one hundred seventy-three million, four hundred one thousand, two hundred eighty".