268266021 has 16 divisors (see below), whose sum is σ = 372398784. Its totient is φ = 171621504.

The previous prime is 268265957. The next prime is 268266023. The reversal of 268266021 is 120662862.

It is not a de Polignac number, because 268266021 - 2⁶ = 268265957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268266023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8451 + ... + 24656.

It is an arithmetic number, because the mean of its divisors is an integer number (23274924).

Almost surely, 2^268266021 is an apocalyptic number.

It is an amenable number.

268266021 is a deficient number, since it is larger than the sum of its proper divisors (104132763).

268266021 is a wasteful number, since it uses less digits than its factorization.

268266021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33220.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 268266021 is about 16378.8284379561. The cubic root of 268266021 is about 644.9438254064.

The spelling of 268266021 in words is "two hundred sixty-eight million, two hundred sixty-six thousand, twenty-one".