1272317700 has 36 divisors (see below), whose sum is σ = 3681240080. Its totient is φ = 339284640.

The previous prime is 1272317693. The next prime is 1272317741. The reversal of 1272317700 is 77132721.

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 11 ways as a sum of consecutive naturals, for example, 2120230 + ... + 2120829.

Almost surely, 2^1272317700 is an apocalyptic number.

1272317700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272317700 is an abundant number, since it is smaller than the sum of its proper divisors (2408922380).

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

1272317700 is a wasteful number, since it uses less digits than its factorization.

1272317700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241076 (or 4241069 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 1272317700 is about 35669.5626550144. The cubic root of 1272317700 is about 1083.5905019974.

The spelling of 1272317700 in words is "one billion, two hundred seventy-two million, three hundred seventeen thousand, seven hundred".