16987872 has 48 divisors (see below), whose sum is σ = 48650112. Its totient is φ = 5147520.

The previous prime is 16987853. The next prime is 16987891. The reversal of 16987872 is 27878961.

It is an interprime number because it is at equal distance from previous prime (16987853) and next prime (16987891).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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, 6988 + ... + 9099.

It is an arithmetic number, because the mean of its divisors is an integer number (1013544).

Almost surely, 2^16987872 is an apocalyptic number.

16987872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16987872 is an abundant number, since it is smaller than the sum of its proper divisors (31662240).

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

16987872 is a wasteful number, since it uses less digits than its factorization.

16987872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16111 (or 16103 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 16987872 is about 4121.6346271837. The cubic root of 16987872 is about 257.0669984347.

The spelling of 16987872 in words is "sixteen million, nine hundred eighty-seven thousand, eight hundred seventy-two".