1216046426 has 24 divisors (see below), whose sum is σ = 2127721536. Its totient is φ = 519727320.

The previous prime is 1216046413. The next prime is 1216046459. The reversal of 1216046426 is 6246406121.

It is a junction number, because it is equal to n+sod(n) for n = 1216046392 and 1216046401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19061 + ... + 52871.

It is an arithmetic number, because the mean of its divisors is an integer number (88655064).

Almost surely, 2^1216046426 is an apocalyptic number.

1216046426 is a deficient number, since it is larger than the sum of its proper divisors (911675110).

1216046426 is a wasteful number, since it uses less digits than its factorization.

1216046426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34194 (or 34187 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1216046426 is about 34871.8572204005. The cubic root of 1216046426 is about 1067.3742430018.

The spelling of 1216046426 in words is "one billion, two hundred sixteen million, forty-six thousand, four hundred twenty-six".