288715428 has 60 divisors (see below), whose sum is σ = 757099420. Its totient is φ = 95940288.

The previous prime is 288715423. The next prime is 288715429. The reversal of 288715428 is 824517882.

It is a happy number.

288715428 is a `hidden beast` number, since 28 + 87 + 1 + 542 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 109369764 + 179345664 = 10458^2 + 13392^2 .

It is not an unprimeable number, because it can be changed into a prime (288715421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119658 + ... + 122046.

Almost surely, 2^288715428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 288715428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378549710).

288715428 is an abundant number, since it is smaller than the sum of its proper divisors (468383992).

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

288715428 is a wasteful number, since it uses less digits than its factorization.

288715428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778 (or 2767 counting only the distinct ones).

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

The square root of 288715428 is about 16991.6281738979. The cubic root of 288715428 is about 660.9318242760.

It can be divided in two parts, 288 and 715428, that added together give a square (715716 = 846²).

The spelling of 288715428 in words is "two hundred eighty-eight million, seven hundred fifteen thousand, four hundred twenty-eight".