288400442 has 8 divisors (see below), whose sum is σ = 471928032. Its totient is φ = 131091100.

The previous prime is 288400439. The next prime is 288400451. The reversal of 288400442 is 244004882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 288400399 and 288400408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6554534 + ... + 6554577.

It is an arithmetic number, because the mean of its divisors is an integer number (58991004).

Almost surely, 2^288400442 is an apocalyptic number.

288400442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

288400442 is a deficient number, since it is larger than the sum of its proper divisors (183527590).

288400442 is a wasteful number, since it uses less digits than its factorization.

288400442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13109124.

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 288400442 is about 16982.3567857939. The cubic root of 288400442 is about 660.6913798725.

The spelling of 288400442 in words is "two hundred eighty-eight million, four hundred thousand, four hundred forty-two".