16461320 has 32 divisors (see below), whose sum is σ = 37243800. Its totient is φ = 6547968.

The previous prime is 16461317. The next prime is 16461331. The reversal of 16461320 is 2316461.

It is a happy number.

16461320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16370116 + 91204 = 4046^2 + 302^2 .

It is a super-3 number, since 3×16461320³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6836 + ... + 8924.

Almost surely, 2^16461320 is an apocalyptic number.

16461320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16461320 is an abundant number, since it is smaller than the sum of its proper divisors (20782480).

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

16461320 is a wasteful number, since it uses less digits than its factorization.

16461320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297 (or 2293 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 16461320 is about 4057.2552298321. The cubic root of 16461320 is about 254.3830787237.

Adding to 16461320 its reverse (2316461), we get a palindrome (18777781).

The spelling of 16461320 in words is "sixteen million, four hundred sixty-one thousand, three hundred twenty".