288880513 has 4 divisors (see below), whose sum is σ = 298841940. Its totient is φ = 278919088.

The previous prime is 288880489. The next prime is 288880531. The reversal of 288880513 is 315088882.

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 160579584 + 128300929 = 12672^2 + 11327^2 .

It is a cyclic number.

It is not a de Polignac number, because 288880513 - 2⁵ = 288880481 is a prime.

It is a super-2 number, since 2×288880513² = 166903901582286338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 288880513.

It is not an unprimeable number, because it can be changed into a prime (288880583) 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, 4980670 + ... + 4980727.

It is an arithmetic number, because the mean of its divisors is an integer number (74710485).

Almost surely, 2^288880513 is an apocalyptic number.

It is an amenable number.

288880513 is a deficient number, since it is larger than the sum of its proper divisors (9961427).

288880513 is an equidigital number, since it uses as much as digits as its factorization.

288880513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961426.

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 288880513 is about 16996.4853131464. The cubic root of 288880513 is about 661.0577719857.

The spelling of 288880513 in words is "two hundred eighty-eight million, eight hundred eighty thousand, five hundred thirteen".