16243380 has 144 divisors (see below), whose sum is σ = 52835328. Its totient is φ = 4032000.

The previous prime is 16243363. The next prime is 16243391. The reversal of 16243380 is 8334261.

It is a happy number.

16243380 is a `hidden beast` number, since 1 + 624 + 3 + 38 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228745 + ... + 228815.

It is an arithmetic number, because the mean of its divisors is an integer number (366912).

It is a vampire number, since it can be written as 3813 ⋅ 4260 (with its own digits).

Almost surely, 2^16243380 is an apocalyptic number.

16243380 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 16243380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26417664).

16243380 is an abundant number, since it is smaller than the sum of its proper divisors (36591948).

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

16243380 is a wasteful number, since it uses less digits than its factorization.

16243380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 16243380 is about 4030.3076805624. The cubic root of 16243380 is about 253.2554508204.

The spelling of 16243380 in words is "sixteen million, two hundred forty-three thousand, three hundred eighty".