16455400 has 48 divisors (see below), whose sum is σ = 41208300. Its totient is φ = 6074880.

The previous prime is 16455367. The next prime is 16455409. The reversal of 16455400 is 455461.

It can be written as a sum of positive squares in 6 ways, for example, as 5044516 + 11410884 = 2246^2 + 3378^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (16455409) 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, 565 + ... + 5764.

Almost surely, 2^16455400 is an apocalyptic number.

16455400 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 16455400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20604150).

16455400 is an abundant number, since it is smaller than the sum of its proper divisors (24752900).

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

16455400 is a wasteful number, since it uses less digits than its factorization.

16455400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358 (or 6349 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 16455400 is about 4056.5256069696. The cubic root of 16455400 is about 254.3525803920.

The spelling of 16455400 in words is "sixteen million, four hundred fifty-five thousand, four hundred".