16424400 has 60 divisors (see below), whose sum is σ = 52616672. Its totient is φ = 4379520.

The previous prime is 16424383. The next prime is 16424407. The reversal of 16424400 is 442461.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16424407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5644 + ... + 8043.

Almost surely, 2^16424400 is an apocalyptic number.

16424400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16424400 is an abundant number, since it is smaller than the sum of its proper divisors (36192272).

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

16424400 is a wasteful number, since it uses less digits than its factorization.

16424400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13708 (or 13697 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 16424400 is about 4052.7028018348. The cubic root of 16424400 is about 254.1927567353.

Adding to 16424400 its reverse (442461), we get a palindrome (16866861).

The spelling of 16424400 in words is "sixteen million, four hundred twenty-four thousand, four hundred".