288878020 has 12 divisors (see below), whose sum is σ = 606643884. Its totient is φ = 115551200.

The previous prime is 288878011. The next prime is 288878021. The reversal of 288878020 is 20878882.

It is a happy number.

288878020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43454464 + 245423556 = 6592^2 + 15666^2 .

It is not an unprimeable number, because it can be changed into a prime (288878021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7221931 + ... + 7221970.

It is an arithmetic number, because the mean of its divisors is an integer number (50553657).

Almost surely, 2^288878020 is an apocalyptic number.

288878020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

288878020 is an abundant number, since it is smaller than the sum of its proper divisors (317765864).

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

288878020 is a wasteful number, since it uses less digits than its factorization.

288878020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14443910 (or 14443908 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 43.

The square root of 288878020 is about 16996.4119742962. The cubic root of 288878020 is about 661.0558703670.

It can be divided in two parts, 2888 and 78020, that added together give a palindrome (80908).

The spelling of 288878020 in words is "two hundred eighty-eight million, eight hundred seventy-eight thousand, twenty".