2149800252 has 12 divisors (see below), whose sum is σ = 5016200616. Its totient is φ = 716600080.

The previous prime is 2149800227. The next prime is 2149800281. The reversal of 2149800252 is 2520089412.

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

It is a super-2 number, since 2×2149800252² = 9243282246998527008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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, 89574999 + ... + 89575022.

It is an arithmetic number, because the mean of its divisors is an integer number (418016718).

Almost surely, 2^2149800252 is an apocalyptic number.

It is an amenable number.

2149800252 is an abundant number, since it is smaller than the sum of its proper divisors (2866400364).

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

2149800252 is a wasteful number, since it uses less digits than its factorization.

2149800252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179150028 (or 179150026 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 2149800252 is about 46365.9384893695. The cubic root of 2149800252 is about 1290.6229093076.

Adding to 2149800252 its reverse (2520089412), we get a palindrome (4669889664).

The spelling of 2149800252 in words is "two billion, one hundred forty-nine million, eight hundred thousand, two hundred fifty-two".