268445816 has 8 divisors (see below), whose sum is σ = 503335920. Its totient is φ = 134222904.

The previous prime is 268445809. The next prime is 268445831. The reversal of 268445816 is 618544862.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×268445816² = 144126312255811712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16777856 + ... + 16777871.

It is an arithmetic number, because the mean of its divisors is an integer number (62916990).

Almost surely, 2^268445816 is an apocalyptic number.

It is an amenable number.

268445816 is a deficient number, since it is larger than the sum of its proper divisors (234890104).

268445816 is a wasteful number, since it uses less digits than its factorization.

268445816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33555733 (or 33555729 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 268445816 is about 16384.3161590589. The cubic root of 268445816 is about 645.0878761748.

The spelling of 268445816 in words is "two hundred sixty-eight million, four hundred forty-five thousand, eight hundred sixteen".