1204439136 has 96 divisors (see below), whose sum is σ = 3308104800. Its totient is φ = 383201280.

The previous prime is 1204439123. The next prime is 1204439149. The reversal of 1204439136 is 6319344021.

It is an interprime number because it is at equal distance from previous prime (1204439123) and next prime (1204439149).

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 1204439097 and 1204439106.

It is a congruent number.

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, 245346 + ... + 250206.

It is an arithmetic number, because the mean of its divisors is an integer number (34459425).

Almost surely, 2^1204439136 is an apocalyptic number.

1204439136 is a gapful number since it is divisible by the number (16) 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 1204439136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1654052400).

1204439136 is an abundant number, since it is smaller than the sum of its proper divisors (2103665664).

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

1204439136 is a wasteful number, since it uses less digits than its factorization.

1204439136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992 (or 4984 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1204439136 is about 34705.0304134718. The cubic root of 1204439136 is about 1063.9673138997.

The spelling of 1204439136 in words is "one billion, two hundred four million, four hundred thirty-nine thousand, one hundred thirty-six".