2249900720 has 20 divisors (see below), whose sum is σ = 5231019360. Its totient is φ = 899960256.

The previous prime is 2249900701. The next prime is 2249900797. The reversal of 2249900720 is 270099422.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

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, 14061800 + ... + 14061959.

It is an arithmetic number, because the mean of its divisors is an integer number (261550968).

Almost surely, 2^2249900720 is an apocalyptic number.

2249900720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2249900720 is an abundant number, since it is smaller than the sum of its proper divisors (2981118640).

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

2249900720 is a wasteful number, since it uses less digits than its factorization.

2249900720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28123772 (or 28123766 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 2249900720 is about 47433.1183878943. The cubic root of 2249900720 is about 1310.3514236946.

The spelling of 2249900720 in words is "two billion, two hundred forty-nine million, nine hundred thousand, seven hundred twenty".