16378988 has 24 divisors (see below), whose sum is σ = 30675120. Its totient is φ = 7629120.

The previous prime is 16378981. The next prime is 16379017. The reversal of 16378988 is 88987361.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16378981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2870 + ... + 6402.

It is an arithmetic number, because the mean of its divisors is an integer number (1278130).

Almost surely, 2^16378988 is an apocalyptic number.

It is an amenable number.

16378988 is a deficient number, since it is larger than the sum of its proper divisors (14296132).

16378988 is a wasteful number, since it uses less digits than its factorization.

16378988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617 (or 3615 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 16378988 is about 4047.0962429871. The cubic root of 16378988 is about 253.9582670601.

The spelling of 16378988 in words is "sixteen million, three hundred seventy-eight thousand, nine hundred eighty-eight".