266671420 has 48 divisors (see below), whose sum is σ = 574801920. Its totient is φ = 103874624.

The previous prime is 266671417. The next prime is 266671439. The reversal of 266671420 is 24176662.

It is a super-2 number, since 2×266671420² = 142227292489632800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224067 + ... + 225253.

It is an arithmetic number, because the mean of its divisors is an integer number (11975040).

Almost surely, 2^266671420 is an apocalyptic number.

266671420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266671420 is an abundant number, since it is smaller than the sum of its proper divisors (308130500).

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

266671420 is a wasteful number, since it uses less digits than its factorization.

266671420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 266671420 is about 16330.0771584215. The cubic root of 266671420 is about 643.6634141251.

The spelling of 266671420 in words is "two hundred sixty-six million, six hundred seventy-one thousand, four hundred twenty".