1217828234 has 16 divisors (see below), whose sum is σ = 2090594688. Its totient is φ = 521204112.

The previous prime is 1217828231. The next prime is 1217828309. The reversal of 1217828234 is 4328287121.

It is not an unprimeable number, because it can be changed into a prime (1217828231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49649 + ... + 70004.

It is an arithmetic number, because the mean of its divisors is an integer number (130662168).

Almost surely, 2^1217828234 is an apocalyptic number.

1217828234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1217828234 is a deficient number, since it is larger than the sum of its proper divisors (872766454).

1217828234 is a wasteful number, since it uses less digits than its factorization.

1217828234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120389.

The product of its digits is 43008, while the sum is 38.

The square root of 1217828234 is about 34897.3958054179. The cubic root of 1217828234 is about 1067.8953107790.

The spelling of 1217828234 in words is "one billion, two hundred seventeen million, eight hundred twenty-eight thousand, two hundred thirty-four".