1204634340 has 288 divisors, whose sum is σ = 4530629376. Its totient is φ = 252288000.

The previous prime is 1204634303. The next prime is 1204634341. The reversal of 1204634340 is 434364021.

1204634340 is a `hidden beast` number, since 1 + 20 + 4 + 634 + 3 + 4 + 0 = 666.

It is a super-2 number, since 2×1204634340² = 2902287786214471200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1204634341) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4111234 + ... + 4111526.

It is an arithmetic number, because the mean of its divisors is an integer number (15731352).

Almost surely, 2^1204634340 is an apocalyptic number.

1204634340 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 1204634340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2265314688).

1204634340 is an abundant number, since it is smaller than the sum of its proper divisors (3325995036).

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

1204634340 is a wasteful number, since it uses less digits than its factorization.

1204634340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1204634340 is about 34707.8426295845. The cubic root of 1204634340 is about 1064.0247900173.

Adding to 1204634340 its reverse (434364021), we get a palindrome (1638998361).

The spelling of 1204634340 in words is "one billion, two hundred four million, six hundred thirty-four thousand, three hundred forty".