1272262800 has 240 divisors, whose sum is σ = 4397843520. Its totient is φ = 313344000.

The previous prime is 1272262793. The next prime is 1272262811. The reversal of 1272262800 is 82622721.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 934120 + ... + 935480.

It is an arithmetic number, because the mean of its divisors is an integer number (18324348).

Almost surely, 2^1272262800 is an apocalyptic number.

1272262800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272262800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2198921760).

1272262800 is an abundant number, since it is smaller than the sum of its proper divisors (3125580720).

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

1272262800 is a wasteful number, since it uses less digits than its factorization.

1272262800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1431 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1272262800 is about 35668.7930830299. The cubic root of 1272262800 is about 1083.5749162743.

The spelling of 1272262800 in words is "one billion, two hundred seventy-two million, two hundred sixty-two thousand, eight hundred".