16400460 has 48 divisors (see below), whose sum is σ = 46684512. Its totient is φ = 4300800.

The previous prime is 16400459. The next prime is 16400473. The reversal of 16400460 is 6400461.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1420 + ... + 5900.

It is an arithmetic number, because the mean of its divisors is an integer number (972594).

Almost surely, 2^16400460 is an apocalyptic number.

16400460 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 16400460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23342256).

16400460 is an abundant number, since it is smaller than the sum of its proper divisors (30284052).

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

16400460 is a wasteful number, since it uses less digits than its factorization.

16400460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554 (or 4552 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 16400460 is about 4049.7481403169. The cubic root of 16400460 is about 254.0691939538.

Subtracting from 16400460 its reverse (6400461), we obtain a palindrome (9999999).

The spelling of 16400460 in words is "sixteen million, four hundred thousand, four hundred sixty".