16423380 has 72 divisors (see below), whose sum is σ = 51996672. Its totient is φ = 4188096.

The previous prime is 16423373. The next prime is 16423387. The reversal of 16423380 is 8332461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16423373) and next prime (16423387).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16423387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2157 + ... + 6123.

It is an arithmetic number, because the mean of its divisors is an integer number (722176).

Almost surely, 2^16423380 is an apocalyptic number.

16423380 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 16423380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25998336).

16423380 is an abundant number, since it is smaller than the sum of its proper divisors (35573292).

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

16423380 is a wasteful number, since it uses less digits than its factorization.

16423380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005 (or 4000 counting only the distinct ones).

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

The square root of 16423380 is about 4052.5769579368. The cubic root of 16423380 is about 254.1874946054.

The spelling of 16423380 in words is "sixteen million, four hundred twenty-three thousand, three hundred eighty".