16335540 has 144 divisors (see below), whose sum is σ = 55339200. Its totient is φ = 3998592.

The previous prime is 16335533. The next prime is 16335547. The reversal of 16335540 is 4553361.

16335540 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 an interprime number because it is at equal distance from previous prime (16335533) and next prime (16335547).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16335547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91171 + ... + 91349.

It is an arithmetic number, because the mean of its divisors is an integer number (384300).

Almost surely, 2^16335540 is an apocalyptic number.

16335540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16335540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27669600).

16335540 is an abundant number, since it is smaller than the sum of its proper divisors (39003660).

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

16335540 is a wasteful number, since it uses less digits than its factorization.

16335540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 16335540 is about 4041.7248793059. The cubic root of 16335540 is about 253.7335126434.

It can be divided in two parts, 16335 and 540, that multiplied together give a square (8820900 = 2970²).

The spelling of 16335540 in words is "sixteen million, three hundred thirty-five thousand, five hundred forty".