1204979680 has 48 divisors (see below), whose sum is σ = 2859282720. Its totient is φ = 479872512.

The previous prime is 1204979647. The next prime is 1204979689. The reversal of 1204979680 is 869794021.

It is a self number, because there is not a number n which added to its sum of digits gives 1204979680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204979689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20197 + ... + 53083.

It is an arithmetic number, because the mean of its divisors is an integer number (59568390).

Almost surely, 2^1204979680 is an apocalyptic number.

1204979680 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 1204979680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429641360).

1204979680 is an abundant number, since it is smaller than the sum of its proper divisors (1654303040).

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

1204979680 is a wasteful number, since it uses less digits than its factorization.

1204979680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33131 (or 33123 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1204979680 is about 34712.8172293751. The cubic root of 1204979680 is about 1064.1264571654.

The spelling of 1204979680 in words is "one billion, two hundred four million, nine hundred seventy-nine thousand, six hundred eighty".