16355640 has 64 divisors (see below), whose sum is σ = 56079360. Its totient is φ = 3738240.

The previous prime is 16355639. The next prime is 16355653. The reversal of 16355640 is 4655361.

16355640 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16355598 and 16355607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8896 + ... + 10575.

It is an arithmetic number, because the mean of its divisors is an integer number (876240).

Almost surely, 2^16355640 is an apocalyptic number.

16355640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16355640 is an abundant number, since it is smaller than the sum of its proper divisors (39723720).

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

16355640 is a wasteful number, since it uses less digits than its factorization.

16355640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19492 (or 19488 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 16355640 is about 4044.2106770048. The cubic root of 16355640 is about 253.8375384517.

The spelling of 16355640 in words is "sixteen million, three hundred fifty-five thousand, six hundred forty".