1272422800 has 120 divisors (see below), whose sum is σ = 3531282912. Its totient is φ = 435456000.

The previous prime is 1272422773. The next prime is 1272422839. The reversal of 1272422800 is 82242721.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66295 + ... + 83305.

Almost surely, 2^1272422800 is an apocalyptic number.

1272422800 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 1272422800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1765641456).

1272422800 is an abundant number, since it is smaller than the sum of its proper divisors (2258860112).

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

1272422800 is a wasteful number, since it uses less digits than its factorization.

1272422800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17057 (or 17046 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1272422800 is about 35671.0358694558. The cubic root of 1272422800 is about 1083.6203378961.

The spelling of 1272422800 in words is "one billion, two hundred seventy-two million, four hundred twenty-two thousand, eight hundred".