16258540 has 48 divisors (see below), whose sum is σ = 35546112. Its totient is φ = 6241536.

The previous prime is 16258537. The next prime is 16258559. The reversal of 16258540 is 4585261.

It is an unprimeable number.

It is a nontrivial repunit in base 253.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93894 + ... + 94066.

It is an arithmetic number, because the mean of its divisors is an integer number (740544).

Almost surely, 2^16258540 is an apocalyptic number.

16258540 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 16258540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17773056).

16258540 is an abundant number, since it is smaller than the sum of its proper divisors (19287572).

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

16258540 is a wasteful number, since it uses less digits than its factorization.

16258540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 16258540 is about 4032.1879916492. The cubic root of 16258540 is about 253.3342143706.

The spelling of 16258540 in words is "sixteen million, two hundred fifty-eight thousand, five hundred forty".