2172400476 has 12 divisors (see below), whose sum is σ = 5068934472. Its totient is φ = 724133488.

The previous prime is 2172400459. The next prime is 2172400519. The reversal of 2172400476 is 6740042712.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90516675 + ... + 90516698.

It is an arithmetic number, because the mean of its divisors is an integer number (422411206).

Almost surely, 2^2172400476 is an apocalyptic number.

It is an amenable number.

2172400476 is an abundant number, since it is smaller than the sum of its proper divisors (2896533996).

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

2172400476 is a wasteful number, since it uses less digits than its factorization.

2172400476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181033380 (or 181033378 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 2172400476 is about 46609.0171104262. The cubic root of 2172400476 is about 1295.1298003991.

The spelling of 2172400476 in words is "two billion, one hundred seventy-two million, four hundred thousand, four hundred seventy-six".