2173987224 has 24 divisors (see below), whose sum is σ = 5887882260. Its totient is φ = 724662384.

The previous prime is 2173987223. The next prime is 2173987229. The reversal of 2173987224 is 4227893712.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2173987224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173987223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15097062 + ... + 15097205.

Almost surely, 2^2173987224 is an apocalyptic number.

2173987224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2173987224 is an abundant number, since it is smaller than the sum of its proper divisors (3713895036).

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

2173987224 is a wasteful number, since it uses less digits than its factorization.

2173987224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30194279 (or 30194272 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 2173987224 is about 46626.0359027014. The cubic root of 2173987224 is about 1295.4450498973.

The spelling of 2173987224 in words is "two billion, one hundred seventy-three million, nine hundred eighty-seven thousand, two hundred twenty-four".