1272868860 has 48 divisors (see below), whose sum is σ = 3565812096. Its totient is φ = 339262272.

The previous prime is 1272868853. The next prime is 1272868867. The reversal of 1272868860 is 688682721.

It is an interprime number because it is at equal distance from previous prime (1272868853) and next prime (1272868867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272868867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157027 + ... + 164933.

It is an arithmetic number, because the mean of its divisors is an integer number (74287752).

Almost surely, 2^1272868860 is an apocalyptic number.

1272868860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272868860 is an abundant number, since it is smaller than the sum of its proper divisors (2292943236).

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

1272868860 is a wasteful number, since it uses less digits than its factorization.

1272868860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10602 (or 10600 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 1272868860 is about 35677.2877332344. The cubic root of 1272868860 is about 1083.7469475987.

The spelling of 1272868860 in words is "one billion, two hundred seventy-two million, eight hundred sixty-eight thousand, eight hundred sixty".