1266416250 has 120 divisors (see below), whose sum is σ = 3480160992. Its totient is φ = 306900000.

The previous prime is 1266416243. The next prime is 1266416251. The reversal of 1266416250 is 526146621.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1266416251) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 452355 + ... + 455145.

Almost surely, 2^1266416250 is an apocalyptic number.

1266416250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266416250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740080496).

1266416250 is an abundant number, since it is smaller than the sum of its proper divisors (2213744742).

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

1266416250 is a wasteful number, since it uses less digits than its factorization.

1266416250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1266416250 is about 35586.7426157551. The cubic root of 1266416250 is about 1081.9125490370.

The spelling of 1266416250 in words is "one billion, two hundred sixty-six million, four hundred sixteen thousand, two hundred fifty".