16939480 has 64 divisors (see below), whose sum is σ = 41796000. Its totient is φ = 6150144.

The previous prime is 16939457. The next prime is 16939487. The reversal of 16939480 is 8493961.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16939487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19291 + ... + 20149.

Almost surely, 2^16939480 is an apocalyptic number.

16939480 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 16939480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20898000).

16939480 is an abundant number, since it is smaller than the sum of its proper divisors (24856520).

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

16939480 is a wasteful number, since it uses less digits than its factorization.

16939480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 16939480 is about 4115.7599541275. The cubic root of 16939480 is about 256.8226708504.

The spelling of 16939480 in words is "sixteen million, nine hundred thirty-nine thousand, four hundred eighty".