1272561360 has 120 divisors (see below), whose sum is σ = 4589054496. Its totient is φ = 290868480.

The previous prime is 1272561343. The next prime is 1272561361. The reversal of 1272561360 is 631652721.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272561361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42346 + ... + 65865.

Almost surely, 2^1272561360 is an apocalyptic number.

1272561360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272561360 is an abundant number, since it is smaller than the sum of its proper divisors (3316493136).

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

1272561360 is a wasteful number, since it uses less digits than its factorization.

1272561360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108241 (or 108228 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1272561360 is about 35672.9780085711. The cubic root of 1272561360 is about 1083.6596699442.

The spelling of 1272561360 in words is "one billion, two hundred seventy-two million, five hundred sixty-one thousand, three hundred sixty".