288946380 has 24 divisors (see below), whose sum is σ = 809050032. Its totient is φ = 77052352.

The previous prime is 288946379. The next prime is 288946387. The reversal of 288946380 is 83649882.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (288946387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2407827 + ... + 2407946.

It is an arithmetic number, because the mean of its divisors is an integer number (33710418).

Almost surely, 2^288946380 is an apocalyptic number.

288946380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

288946380 is an abundant number, since it is smaller than the sum of its proper divisors (520103652).

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

288946380 is a wasteful number, since it uses less digits than its factorization.

288946380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815785 (or 4815783 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 288946380 is about 16998.4228680193. The cubic root of 288946380 is about 661.1080102693.

The spelling of 288946380 in words is "two hundred eighty-eight million, nine hundred forty-six thousand, three hundred eighty".