1217386434 has 32 divisors (see below), whose sum is σ = 2659138560. Its totient is φ = 368485200.

The previous prime is 1217386427. The next prime is 1217386451. The reversal of 1217386434 is 4346837121.

It is a junction number, because it is equal to n+sod(n) for n = 1217386392 and 1217386401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50619 + ... + 70689.

It is an arithmetic number, because the mean of its divisors is an integer number (83098080).

Almost surely, 2^1217386434 is an apocalyptic number.

1217386434 is an abundant number, since it is smaller than the sum of its proper divisors (1441752126).

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

1217386434 is a wasteful number, since it uses less digits than its factorization.

1217386434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21006.

The product of its digits is 96768, while the sum is 39.

The square root of 1217386434 is about 34891.0652459910. The cubic root of 1217386434 is about 1067.7661592290.

The spelling of 1217386434 in words is "one billion, two hundred seventeen million, three hundred eighty-six thousand, four hundred thirty-four".