16227540 has 192 divisors, whose sum is σ = 59512320. Its totient is φ = 3639168.

The previous prime is 16227529. The next prime is 16227553. The reversal of 16227540 is 4572261.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 306154 + ... + 306206.

It is an arithmetic number, because the mean of its divisors is an integer number (309960).

Almost surely, 2^16227540 is an apocalyptic number.

16227540 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 16227540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29756160).

16227540 is an abundant number, since it is smaller than the sum of its proper divisors (43284780).

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

16227540 is an equidigital number, since it uses as much as digits as its factorization.

16227540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 16227540 is about 4028.3420907366. The cubic root of 16227540 is about 253.1731019696.

The spelling of 16227540 in words is "sixteen million, two hundred twenty-seven thousand, five hundred forty".