1266231600 has 90 divisors (see below), whose sum is σ = 4394187876. Its totient is φ = 337660800.

The previous prime is 1266231583. The next prime is 1266231601. The reversal of 1266231600 is 61326621.

1266231600 is a `hidden beast` number, since 1 + 26 + 6 + 2 + 31 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (90).

It is not an unprimeable number, because it can be changed into a prime (1266231601) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 172266 + ... + 179465.

Almost surely, 2^1266231600 is an apocalyptic number.

1266231600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266231600 is an abundant number, since it is smaller than the sum of its proper divisors (3127956276).

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

1266231600 is a wasteful number, since it uses less digits than its factorization.

1266231600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351755 (or 351741 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1266231600 is about 35584.1481561664. The cubic root of 1266231600 is about 1081.8599636772.

The spelling of 1266231600 in words is "one billion, two hundred sixty-six million, two hundred thirty-one thousand, six hundred".