16400300 has 54 divisors (see below), whose sum is σ = 41411412. Its totient is φ = 5621280.

The previous prime is 16400299. The next prime is 16400309. The reversal of 16400300 is 300461.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (16400309) 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, 3227 + ... + 6573.

It is an arithmetic number, because the mean of its divisors is an integer number (766878).

Almost surely, 2^16400300 is an apocalyptic number.

16400300 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 16400300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20705706).

16400300 is an abundant number, since it is smaller than the sum of its proper divisors (25011112).

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

16400300 is a wasteful number, since it uses less digits than its factorization.

16400300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 16400300 is about 4049.7283859538. The cubic root of 16400300 is about 254.0683677330.

Adding to 16400300 its reverse (300461), we get a palindrome (16700761).

The spelling of 16400300 in words is "sixteen million, four hundred thousand, three hundred".