288423988 has 12 divisors (see below), whose sum is σ = 505008000. Its totient is φ = 144135992.

The previous prime is 288423977. The next prime is 288423997. The reversal of 288423988 is 889324882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9988 + ... + 26011.

It is an arithmetic number, because the mean of its divisors is an integer number (42084000).

Almost surely, 2^288423988 is an apocalyptic number.

It is an amenable number.

288423988 is a deficient number, since it is larger than the sum of its proper divisors (216584012).

288423988 is a wasteful number, since it uses less digits than its factorization.

288423988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38006 (or 38004 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 52.

The square root of 288423988 is about 16983.0500205352. The cubic root of 288423988 is about 660.7093597523.

The spelling of 288423988 in words is "two hundred eighty-eight million, four hundred twenty-three thousand, nine hundred eighty-eight".