1216327004 has 24 divisors (see below), whose sum is σ = 2143680000. Its totient is φ = 603860400.

The previous prime is 1216327001. The next prime is 1216327031. The reversal of 1216327004 is 4007236121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216327001) 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, 475529 + ... + 478079.

It is an arithmetic number, because the mean of its divisors is an integer number (89320000).

Almost surely, 2^1216327004 is an apocalyptic number.

It is an amenable number.

1216327004 is a deficient number, since it is larger than the sum of its proper divisors (927352996).

1216327004 is a wasteful number, since it uses less digits than its factorization.

1216327004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1216327004 is about 34875.8799745612. The cubic root of 1216327004 is about 1067.4563283273.

The spelling of 1216327004 in words is "one billion, two hundred sixteen million, three hundred twenty-seven thousand, four".