1234684220 has 96 divisors (see below), whose sum is σ = 3402846720. Its totient is φ = 364573440.

The previous prime is 1234684207. The next prime is 1234684261. The reversal of 1234684220 is 224864321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8162 + ... + 50358.

It is an arithmetic number, because the mean of its divisors is an integer number (35446320).

Almost surely, 2^1234684220 is an apocalyptic number.

1234684220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234684220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701423360).

1234684220 is an abundant number, since it is smaller than the sum of its proper divisors (2168162500).

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

1234684220 is a wasteful number, since it uses less digits than its factorization.

1234684220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42243 (or 42241 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 1234684220 is about 35138.0736523788. The cubic root of 1234684220 is about 1072.7996731971.

The spelling of 1234684220 in words is "one billion, two hundred thirty-four million, six hundred eighty-four thousand, two hundred twenty".