16449400 has 48 divisors (see below), whose sum is σ = 41727240. Its totient is φ = 5980800.

The previous prime is 16449373. The next prime is 16449403. The reversal of 16449400 is 494461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16449403) 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, 1539 + ... + 5938.

Almost surely, 2^16449400 is an apocalyptic number.

16449400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16449400 is an abundant number, since it is smaller than the sum of its proper divisors (25277840).

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

16449400 is a wasteful number, since it uses less digits than its factorization.

16449400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7504 (or 7495 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 16449400 is about 4055.7859904093. The cubic root of 16449400 is about 254.3216624562.

The spelling of 16449400 in words is "sixteen million, four hundred forty-nine thousand, four hundred".