268402805 has 32 divisors (see below), whose sum is σ = 365976576. Its totient is φ = 188760000.

The previous prime is 268402787. The next prime is 268402807. The reversal of 268402805 is 508204862.

It is not a de Polignac number, because 268402805 - 2¹⁴ = 268386421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268402807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205655 + ... + 206955.

It is an arithmetic number, because the mean of its divisors is an integer number (11436768).

Almost surely, 2^268402805 is an apocalyptic number.

It is an amenable number.

268402805 is a deficient number, since it is larger than the sum of its proper divisors (97573771).

268402805 is a wasteful number, since it uses less digits than its factorization.

268402805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 268402805 is about 16383.0035402548. The cubic root of 268402805 is about 645.0534218517.

The spelling of 268402805 in words is "two hundred sixty-eight million, four hundred two thousand, eight hundred five".