16101640 has 16 divisors (see below), whose sum is σ = 36228780. Its totient is φ = 6440640.

The previous prime is 16101637. The next prime is 16101647. The reversal of 16101640 is 4610161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15888196 + 213444 = 3986^2 + 462^2 .

It is not an unprimeable number, because it can be changed into a prime (16101647) 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 3 ways as a sum of consecutive naturals, for example, 201231 + ... + 201310.

Almost surely, 2^16101640 is an apocalyptic number.

16101640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16101640 is an abundant number, since it is smaller than the sum of its proper divisors (20127140).

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

16101640 is a wasteful number, since it uses less digits than its factorization.

16101640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402552 (or 402548 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 16101640 is about 4012.6848867062. The cubic root of 16101640 is about 252.5166606658.

The spelling of 16101640 in words is "sixteen million, one hundred one thousand, six hundred forty".