16635340 has 24 divisors (see below), whose sum is σ = 35788032. Its totient is φ = 6491520.

The previous prime is 16635329. The next prime is 16635341. The reversal of 16635340 is 4353661.

It is a junction number, because it is equal to n+sod(n) for n = 16635299 and 16635308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16635341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9324 + ... + 10963.

It is an arithmetic number, because the mean of its divisors is an integer number (1491168).

Almost surely, 2^16635340 is an apocalyptic number.

16635340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16635340 is an abundant number, since it is smaller than the sum of its proper divisors (19152692).

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

16635340 is a wasteful number, since it uses less digits than its factorization.

16635340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20337 (or 20335 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 16635340 is about 4078.6443826350. The cubic root of 16635340 is about 255.2763376219.

The spelling of 16635340 in words is "sixteen million, six hundred thirty-five thousand, three hundred forty".