288817245 has 20 divisors (see below), whose sum is σ = 517732380. Its totient is φ = 154035648.

The previous prime is 288817231. The next prime is 288817261. The reversal of 288817245 is 542718882.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117809316 + 171007929 = 10854^2 + 13077^2 .

It is not a de Polignac number, because 288817245 - 2⁴ = 288817229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 288817245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 356160 + ... + 356969.

It is an arithmetic number, because the mean of its divisors is an integer number (25886619).

Almost surely, 2^288817245 is an apocalyptic number.

It is an amenable number.

288817245 is a deficient number, since it is larger than the sum of its proper divisors (228915135).

288817245 is an equidigital number, since it uses as much as digits as its factorization.

288817245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713146 (or 713137 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 288817245 is about 16994.6240029016. The cubic root of 288817245 is about 661.0095088286.

The spelling of 288817245 in words is "two hundred eighty-eight million, eight hundred seventeen thousand, two hundred forty-five".