16313520 has 80 divisors (see below), whose sum is σ = 51148512. Its totient is φ = 4300800.

The previous prime is 16313519. The next prime is 16313527. The reversal of 16313520 is 2531361.

It is a Cunningham number, because it is equal to 4039²-1.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×16313520² = 532261869580800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16313527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23904 + ... + 24576.

Almost surely, 2^16313520 is an apocalyptic number.

16313520 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 16313520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25574256).

16313520 is an abundant number, since it is smaller than the sum of its proper divisors (34834992).

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

16313520 is a wasteful number, since it uses less digits than its factorization.

16313520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 16313520 is about 4038.9998762070. Note that the first 3 decimals coincide. The cubic root of 16313520 is about 253.6194520468.

Adding to 16313520 its reverse (2531361), we get a palindrome (18844881).

It can be divided in two parts, 1631 and 3520, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 16313520 in words is "sixteen million, three hundred thirteen thousand, five hundred twenty".