266042620 has 24 divisors (see below), whose sum is σ = 576713088. Its totient is φ = 102984000.

The previous prime is 266042599. The next prime is 266042641. The reversal of 266042620 is 26240662.

It is an interprime number because it is at equal distance from previous prime (266042599) and next prime (266042641).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213931 + ... + 215170.

It is an arithmetic number, because the mean of its divisors is an integer number (24029712).

Almost surely, 2^266042620 is an apocalyptic number.

266042620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266042620 is an abundant number, since it is smaller than the sum of its proper divisors (310670468).

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

266042620 is a wasteful number, since it uses less digits than its factorization.

266042620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429141 (or 429139 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 266042620 is about 16310.8129778990. The cubic root of 266042620 is about 643.1571055392.

It can be divided in two parts, 266042 and 620, that added together give a palindrome (266662).

The spelling of 266042620 in words is "two hundred sixty-six million, forty-two thousand, six hundred twenty".