16224207400 has 24 divisors (see below), whose sum is σ = 37721282670. Its totient is φ = 6489682880.

The previous prime is 16224207379. The next prime is 16224207403. The reversal of 16224207400 is 470242261.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11254239396 + 4969968004 = 106086^2 + 70498^2 .

It is not an unprimeable number, because it can be changed into a prime (16224207403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40560319 + ... + 40560718.

Almost surely, 2^16224207400 is an apocalyptic number.

16224207400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16224207400 is an abundant number, since it is smaller than the sum of its proper divisors (21497075270).

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

16224207400 is a wasteful number, since it uses less digits than its factorization.

16224207400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81121053 (or 81121044 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 16224207400 its reverse (470242261), we get a palindrome (16694449661).

The spelling of 16224207400 in words is "sixteen billion, two hundred twenty-four million, two hundred seven thousand, four hundred".