16377444 has 24 divisors (see below), whose sum is σ = 42460320. Its totient is φ = 5459112.

The previous prime is 16377433. The next prime is 16377457. The reversal of 16377444 is 44477361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16377399 and 16377408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75714 + ... + 75929.

It is an arithmetic number, because the mean of its divisors is an integer number (1769180).

Almost surely, 2^16377444 is an apocalyptic number.

It is an amenable number.

16377444 is an abundant number, since it is smaller than the sum of its proper divisors (26082876).

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

16377444 is a wasteful number, since it uses less digits than its factorization.

16377444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151656 (or 151648 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 16377444 is about 4046.9054844412. The cubic root of 16377444 is about 253.9502868380.

The spelling of 16377444 in words is "sixteen million, three hundred seventy-seven thousand, four hundred forty-four".