16061540 has 36 divisors (see below), whose sum is σ = 37079868. Its totient is φ = 5839680.

The previous prime is 16061519. The next prime is 16061543. The reversal of 16061540 is 4516061.

It can be written as a sum of positive squares in 2 ways, for example, as 2238016 + 13823524 = 1496^2 + 3718^2 .

It is not an unprimeable number, because it can be changed into a prime (16061543) 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 11 ways as a sum of consecutive naturals, for example, 899 + ... + 5738.

Almost surely, 2^16061540 is an apocalyptic number.

16061540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16061540 is an abundant number, since it is smaller than the sum of its proper divisors (21018328).

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

16061540 is a wasteful number, since it uses less digits than its factorization.

16061540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668 (or 6655 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 16061540 is about 4007.6851173714. The cubic root of 16061540 is about 252.3068614217.

The spelling of 16061540 in words is "sixteen million, sixty-one thousand, five hundred forty".