1267155852 has 48 divisors (see below), whose sum is σ = 2996448000. Its totient is φ = 416737728.

The previous prime is 1267155823. The next prime is 1267155889. The reversal of 1267155852 is 2585517621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360399 + ... + 363897.

It is an arithmetic number, because the mean of its divisors is an integer number (62426000).

Almost surely, 2^1267155852 is an apocalyptic number.

1267155852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1267155852 is an abundant number, since it is smaller than the sum of its proper divisors (1729292148).

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

1267155852 is a wasteful number, since it uses less digits than its factorization.

1267155852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902 (or 3900 counting only the distinct ones).

The product of its digits is 168000, while the sum is 42.

The square root of 1267155852 is about 35597.1326373347. The cubic root of 1267155852 is about 1082.1231246049.

The spelling of 1267155852 in words is "one billion, two hundred sixty-seven million, one hundred fifty-five thousand, eight hundred fifty-two".