1167228220 has 24 divisors (see below), whose sum is σ = 2452487184. Its totient is φ = 466642176.

The previous prime is 1167228199. The next prime is 1167228259. The reversal of 1167228220 is 228227611.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25492 + ... + 54628.

It is an arithmetic number, because the mean of its divisors is an integer number (102186966).

Almost surely, 2^1167228220 is an apocalyptic number.

1167228220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1167228220 is an abundant number, since it is smaller than the sum of its proper divisors (1285258964).

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

1167228220 is a wasteful number, since it uses less digits than its factorization.

1167228220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31149 (or 31147 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1167228220 is about 34164.7218633490. The cubic root of 1167228220 is about 1052.8954759832.

The spelling of 1167228220 in words is "one billion, one hundred sixty-seven million, two hundred twenty-eight thousand, two hundred twenty".