288906940 has 36 divisors (see below), whose sum is σ = 705760776. Its totient is φ = 99053472.

The previous prime is 288906931. The next prime is 288906953. The reversal of 288906940 is 49609882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146422 + ... + 148381.

It is an arithmetic number, because the mean of its divisors is an integer number (19604466).

Almost surely, 2^288906940 is an apocalyptic number.

288906940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

288906940 is an abundant number, since it is smaller than the sum of its proper divisors (416853836).

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

288906940 is a wasteful number, since it uses less digits than its factorization.

288906940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294826 (or 294817 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 288906940 is about 16997.2627208030. The cubic root of 288906940 is about 661.0779293868.

The spelling of 288906940 in words is "two hundred eighty-eight million, nine hundred six thousand, nine hundred forty".