268218402 has 32 divisors (see below), whose sum is σ = 579940800. Its totient is φ = 82410048.

The previous prime is 268218397. The next prime is 268218407. The reversal of 268218402 is 204812862.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (268218397) and next prime (268218407).

It is a super-2 number, since 2×268218402² = 143882222342867208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268218407) 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, 27577 + ... + 36012.

It is an arithmetic number, because the mean of its divisors is an integer number (18123150).

Almost surely, 2^268218402 is an apocalyptic number.

268218402 is an abundant number, since it is smaller than the sum of its proper divisors (311722398).

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

268218402 is a wasteful number, since it uses less digits than its factorization.

268218402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63650.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 268218402 is about 16377.3746980400. The cubic root of 268218402 is about 644.9056625445.

The spelling of 268218402 in words is "two hundred sixty-eight million, two hundred eighteen thousand, four hundred two".