1227158052 has 12 divisors (see below), whose sum is σ = 2863368816. Its totient is φ = 409052680.

The previous prime is 1227158047. The next prime is 1227158059. The reversal of 1227158052 is 2508517221.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1227158059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51131574 + ... + 51131597.

It is an arithmetic number, because the mean of its divisors is an integer number (238614068).

Almost surely, 2^1227158052 is an apocalyptic number.

1227158052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1227158052 is an abundant number, since it is smaller than the sum of its proper divisors (1636210764).

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

1227158052 is a wasteful number, since it uses less digits than its factorization.

1227158052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102263178 (or 102263176 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 1227158052 is about 35030.8157484236. The cubic root of 1227158052 is about 1070.6154353932.

The spelling of 1227158052 in words is "one billion, two hundred twenty-seven million, one hundred fifty-eight thousand, fifty-two".