288072649 has 4 divisors (see below), whose sum is σ = 293508036. Its totient is φ = 282637264.

The previous prime is 288072641. The next prime is 288072679. The reversal of 288072649 is 946270882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154554624 + 133518025 = 12432^2 + 11555^2 .

It is a cyclic number.

It is not a de Polignac number, because 288072649 - 2³ = 288072641 is a prime.

It is a super-2 number, since 2×288072649² = 165971702203754402, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 288072599 and 288072608.

It is not an unprimeable number, because it can be changed into a prime (288072641) 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, 2717614 + ... + 2717719.

It is an arithmetic number, because the mean of its divisors is an integer number (73377009).

Almost surely, 2^288072649 is an apocalyptic number.

It is an amenable number.

288072649 is a deficient number, since it is larger than the sum of its proper divisors (5435387).

288072649 is an equidigital number, since it uses as much as digits as its factorization.

288072649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435386.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 288072649 is about 16972.7030552001. The cubic root of 288072649 is about 660.4409732848.

The spelling of 288072649 in words is "two hundred eighty-eight million, seventy-two thousand, six hundred forty-nine".