288020534 has 4 divisors (see below), whose sum is σ = 432030804. Its totient is φ = 144010266.

The previous prime is 288020533. The next prime is 288020539. The reversal of 288020534 is 435020882.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 288020534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288020533) 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 as a sum of consecutive naturals, namely, 72005132 + ... + 72005135.

It is an arithmetic number, because the mean of its divisors is an integer number (108007701).

Almost surely, 2^288020534 is an apocalyptic number.

288020534 is a deficient number, since it is larger than the sum of its proper divisors (144010270).

288020534 is a wasteful number, since it uses less digits than its factorization.

288020534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144010269.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 288020534 is about 16971.1677264707. The cubic root of 288020534 is about 660.4011442611.

The spelling of 288020534 in words is "two hundred eighty-eight million, twenty thousand, five hundred thirty-four".