16387136 has 14 divisors (see below), whose sum is σ = 32518350. Its totient is φ = 8193536.

The previous prime is 16387121. The next prime is 16387181. The reversal of 16387136 is 63178361.

It can be written as a sum of positive squares in only one way, i.e., 16321600 + 65536 = 4040^2 + 256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16387096 and 16387105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127961 + ... + 128088.

Almost surely, 2^16387136 is an apocalyptic number.

16387136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16387136 is a deficient number, since it is larger than the sum of its proper divisors (16131214).

16387136 is an equidigital number, since it uses as much as digits as its factorization.

16387136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256061 (or 256051 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 16387136 is about 4048.1027654940. The cubic root of 16387136 is about 254.0003720002. Note that the first 3 decimals are identical.

The spelling of 16387136 in words is "sixteen million, three hundred eighty-seven thousand, one hundred thirty-six".