16400461 has 36 divisors (see below), whose sum is σ = 22212064. Its totient is φ = 11848320.

The previous prime is 16400459. The next prime is 16400473.

16400461 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 16400461 - 2¹ = 16400459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16400411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 244750 + ... + 244816.

Almost surely, 2^16400461 is an apocalyptic number.

16400461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16400461 is a deficient number, since it is larger than the sum of its proper divisors (5811603).

16400461 is a wasteful number, since it uses less digits than its factorization.

16400461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 16400461 is about 4049.7482637813. The cubic root of 16400461 is about 254.0691991176.

It can be divided in two parts, 16400 and 461, that added together give a palindrome (16861).

The spelling of 16400461 in words is "sixteen million, four hundred thousand, four hundred sixty-one".