16420344 has 64 divisors (see below), whose sum is σ = 43338240. Its totient is φ = 5174400.

The previous prime is 16420333. The next prime is 16420373. The reversal of 16420344 is 44302461.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83254 + ... + 83450.

It is an arithmetic number, because the mean of its divisors is an integer number (677160).

Almost surely, 2^16420344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16420344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21669120).

16420344 is an abundant number, since it is smaller than the sum of its proper divisors (26917896).

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

16420344 is a wasteful number, since it uses less digits than its factorization.

16420344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 16420344 is about 4052.2023641472. The cubic root of 16420344 is about 254.1718307410.

The spelling of 16420344 in words is "sixteen million, four hundred twenty thousand, three hundred forty-four".