288828929 has 4 divisors (see below), whose sum is σ = 305818884. Its totient is φ = 271838976.

The previous prime is 288828907. The next prime is 288828949. The reversal of 288828929 is 929828882.

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 94867600 + 193961329 = 9740^2 + 13927^2 .

It is not a de Polignac number, because 288828929 - 2²⁸ = 20393473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288828949) 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, 8494952 + ... + 8494985.

It is an arithmetic number, because the mean of its divisors is an integer number (76454721).

Almost surely, 2^288828929 is an apocalyptic number.

It is an amenable number.

288828929 is a deficient number, since it is larger than the sum of its proper divisors (16989955).

288828929 is a wasteful number, since it uses less digits than its factorization.

288828929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16989954.

The product of its digits is 2654208, while the sum is 56.

The square root of 288828929 is about 16994.9677551915. The cubic root of 288828929 is about 661.0184223441.

The spelling of 288828929 in words is "two hundred eighty-eight million, eight hundred twenty-eight thousand, nine hundred twenty-nine".