8044136400 has 120 divisors (see below), whose sum is σ = 27124340320. Its totient is φ = 2032197120.

The previous prime is 8044136389. The next prime is 8044136407. The reversal of 8044136400 is 46314408.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8044136407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153607 + ... + 199206.

Almost surely, 2^8044136400 is an apocalyptic number.

8044136400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8044136400 is an abundant number, since it is smaller than the sum of its proper divisors (19080203920).

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

8044136400 is a wasteful number, since it uses less digits than its factorization.

8044136400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352853 (or 352842 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 8044136400 is about 89689.1097068089. The cubic root of 8044136400 is about 2003.6712900245.

The spelling of 8044136400 in words is "eight billion, forty-four million, one hundred thirty-six thousand, four hundred".