288923355 has 144 divisors (see below), whose sum is σ = 633394944. Its totient is φ = 125737920.

The previous prime is 288923333. The next prime is 288923359. The reversal of 288923355 is 553329882.

It is not a de Polignac number, because 288923355 - 2²⁶ = 221814491 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 288923355.

It is not an unprimeable number, because it can be changed into a prime (288923359) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1369200 + ... + 1369410.

It is an arithmetic number, because the mean of its divisors is an integer number (4398576).

Almost surely, 2^288923355 is an apocalyptic number.

288923355 is an abundant number, since it is smaller than the sum of its proper divisors (344471589).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

288923355 is a wasteful number, since it uses less digits than its factorization.

288923355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 249 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 288923355 is about 16997.7455858123. The cubic root of 288923355 is about 661.0904494376.

It can be divided in two parts, 2889 and 23355, that added together give a square (26244 = 162²).

The spelling of 288923355 in words is "two hundred eighty-eight million, nine hundred twenty-three thousand, three hundred fifty-five".