16432444 has 60 divisors (see below), whose sum is σ = 35292600. Its totient is φ = 6684384.

The previous prime is 16432439. The next prime is 16432459. The reversal of 16432444 is 44423461.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 278487 + ... + 278545.

It is an arithmetic number, because the mean of its divisors is an integer number (588210).

Almost surely, 2^16432444 is an apocalyptic number.

16432444 is a gapful number since it is divisible by the number (14) 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 16432444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17646300).

16432444 is an abundant number, since it is smaller than the sum of its proper divisors (18860156).

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

16432444 is an equidigital number, since it uses as much as digits as its factorization.

16432444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 97 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

The square root of 16432444 is about 4053.6951044695. The cubic root of 16432444 is about 254.2342477044.

The spelling of 16432444 in words is "sixteen million, four hundred thirty-two thousand, four hundred forty-four".