1266879200 has 36 divisors (see below), whose sum is σ = 3092770800. Its totient is φ = 506751360.

The previous prime is 1266879197. The next prime is 1266879203. The reversal of 1266879200 is 29786621.

It is an interprime number because it is at equal distance from previous prime (1266879197) and next prime (1266879203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266879203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 791000 + ... + 792599.

It is an arithmetic number, because the mean of its divisors is an integer number (85910300).

Almost surely, 2^1266879200 is an apocalyptic number.

1266879200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266879200 is an abundant number, since it is smaller than the sum of its proper divisors (1825891600).

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

1266879200 is a wasteful number, since it uses less digits than its factorization.

1266879200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583619 (or 1583606 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1266879200 is about 35593.2465504343. The cubic root of 1266879200 is about 1082.0443673061.

The spelling of 1266879200 in words is "one billion, two hundred sixty-six million, eight hundred seventy-nine thousand, two hundred".