1272688200 has 672 divisors, whose sum is σ = 5367067200. Its totient is φ = 274337280.

The previous prime is 1272688177. The next prime is 1272688217. The reversal of 1272688200 is 28862721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 29597379 + ... + 29597421.

Almost surely, 2^1272688200 is an apocalyptic number.

1272688200 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 1272688200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2683533600).

1272688200 is an abundant number, since it is smaller than the sum of its proper divisors (4094379000).

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

1272688200 is a wasteful number, since it uses less digits than its factorization.

1272688200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1272688200 is about 35674.7557805236. The cubic root of 1272688200 is about 1083.6956726158.

The spelling of 1272688200 in words is "one billion, two hundred seventy-two million, six hundred eighty-eight thousand, two hundred".