15384321400 has 96 divisors (see below), whose sum is σ = 40960548000. Its totient is φ = 5264017920.

The previous prime is 15384321341. The next prime is 15384321401. The reversal of 15384321400 is 412348351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15384321401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 701806 + ... + 723394.

It is an arithmetic number, because the mean of its divisors is an integer number (426672375).

Almost surely, 2^15384321400 is an apocalyptic number.

15384321400 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 15384321400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20480274000).

15384321400 is an abundant number, since it is smaller than the sum of its proper divisors (25576226600).

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

15384321400 is a wasteful number, since it uses less digits than its factorization.

15384321400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22121 (or 22112 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 15384321400 its reverse (412348351), we get a palindrome (15796669751).

The spelling of 15384321400 in words is "fifteen billion, three hundred eighty-four million, three hundred twenty-one thousand, four hundred".