1236904224 has 96 divisors (see below), whose sum is σ = 3450335616. Its totient is φ = 386641920.

The previous prime is 1236904211. The next prime is 1236904231. The reversal of 1236904224 is 4224096321.

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

It is a super-4 number, since 4×1236904224⁴ (a number of 37 digits) contains 4444 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 506334 + ... + 508770.

It is an arithmetic number, because the mean of its divisors is an integer number (35940996).

Almost surely, 2^1236904224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1236904224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725167808).

1236904224 is an abundant number, since it is smaller than the sum of its proper divisors (2213431392).

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

1236904224 is a wasteful number, since it uses less digits than its factorization.

1236904224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778 (or 2770 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1236904224 is about 35169.6491879006. The cubic root of 1236904224 is about 1073.4422649196.

The spelling of 1236904224 in words is "one billion, two hundred thirty-six million, nine hundred four thousand, two hundred twenty-four".