16264400 has 60 divisors (see below), whose sum is σ = 39681612. Its totient is φ = 6405120.

The previous prime is 16264387. The next prime is 16264403. The reversal of 16264400 is 446261.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1915456 + 14348944 = 1384^2 + 3788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16264403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28922 + ... + 29478.

Almost surely, 2^16264400 is an apocalyptic number.

16264400 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 16264400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19840806).

16264400 is an abundant number, since it is smaller than the sum of its proper divisors (23417212).

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

16264400 is a wasteful number, since it uses less digits than its factorization.

16264400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 16264400 is about 4032.9145788127. The cubic root of 16264400 is about 253.3646467911.

The spelling of 16264400 in words is "sixteen million, two hundred sixty-four thousand, four hundred".