1227978060 has 24 divisors (see below), whose sum is σ = 3438338736. Its totient is φ = 327460800.

The previous prime is 1227978013. The next prime is 1227978061. The reversal of 1227978060 is 608797221.

It is not an unprimeable number, because it can be changed into a prime (1227978061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10233091 + ... + 10233210.

It is an arithmetic number, because the mean of its divisors is an integer number (143264114).

Almost surely, 2^1227978060 is an apocalyptic number.

1227978060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227978060 is an abundant number, since it is smaller than the sum of its proper divisors (2210360676).

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

1227978060 is a wasteful number, since it uses less digits than its factorization.

1227978060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20466313 (or 20466311 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1227978060 is about 35042.5178889874. The cubic root of 1227978060 is about 1070.8538501455.

The spelling of 1227978060 in words is "one billion, two hundred twenty-seven million, nine hundred seventy-eight thousand, sixty".