2009100724 has 12 divisors (see below), whose sum is σ = 3535352548. Its totient is φ = 999000000.

The previous prime is 2009100721. The next prime is 2009100791. The reversal of 2009100724 is 4270019002.

It can be written as a sum of positive squares in 2 ways, for example, as 27248400 + 1981852324 = 5220^2 + 44518^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009100721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1386777 + ... + 1388224.

Almost surely, 2^2009100724 is an apocalyptic number.

It is an amenable number.

2009100724 is a deficient number, since it is larger than the sum of its proper divisors (1526251824).

2009100724 is a wasteful number, since it uses less digits than its factorization.

2009100724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775186 (or 2775184 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2009100724 is about 44822.9932512321. The cubic root of 2009100724 is about 1261.8291908603.

Adding to 2009100724 its reverse (4270019002), we get a palindrome (6279119726).

The spelling of 2009100724 in words is "two billion, nine million, one hundred thousand, seven hundred twenty-four".