16487940 has 96 divisors (see below), whose sum is σ = 54238464. Its totient is φ = 3663360.

The previous prime is 16487927. The next prime is 16487957. The reversal of 16487940 is 4978461.

It is a happy number.

16487940 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15010 + ... + 16070.

It is an arithmetic number, because the mean of its divisors is an integer number (564984).

Almost surely, 2^16487940 is an apocalyptic number.

16487940 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 16487940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27119232).

16487940 is an abundant number, since it is smaller than the sum of its proper divisors (37750524).

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

16487940 is a wasteful number, since it uses less digits than its factorization.

16487940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 16487940 is about 4060.5344475820. The cubic root of 16487940 is about 254.5201278914.

The spelling of 16487940 in words is "sixteen million, four hundred eighty-seven thousand, nine hundred forty".