1213050928 has 60 divisors (see below), whose sum is σ = 2448077688. Its totient is φ = 581944320.

The previous prime is 1213050919. The next prime is 1213050973. The reversal of 1213050928 is 8290503121.

It is a super-2 number, since 2×1213050928² = 2942985107843322368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1213050928.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3495651 + ... + 3495997.

Almost surely, 2^1213050928 is an apocalyptic number.

It is an amenable number.

1213050928 is an abundant number, since it is smaller than the sum of its proper divisors (1235026760).

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

1213050928 is an equidigital number, since it uses as much as digits as its factorization.

1213050928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1213050928 is about 34828.8806595905. The cubic root of 1213050928 is about 1066.4970982187.

The spelling of 1213050928 in words is "one billion, two hundred thirteen million, fifty thousand, nine hundred twenty-eight".