16383400 has 72 divisors (see below), whose sum is σ = 41930910. Its totient is φ = 5948800.

The previous prime is 16383391. The next prime is 16383403. The reversal of 16383400 is 438361.

It can be written as a sum of positive squares in 3 ways, for example, as 15856324 + 527076 = 3982^2 + 726^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (16383403) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23862 + ... + 24538.

Almost surely, 2^16383400 is an apocalyptic number.

16383400 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 16383400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20965455).

16383400 is an abundant number, since it is smaller than the sum of its proper divisors (25547510).

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

16383400 is a wasteful number, since it uses less digits than its factorization.

16383400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 16383400 is about 4047.6412884543. The cubic root of 16383400 is about 253.9810678844.

The spelling of 16383400 in words is "sixteen million, three hundred eighty-three thousand, four hundred".