16244840 has 32 divisors (see below), whose sum is σ = 36921960. Its totient is φ = 6432000.

The previous prime is 16244827. The next prime is 16244857. The reversal of 16244840 is 4844261.

It can be written as a sum of positive squares in 4 ways, for example, as 13293316 + 2951524 = 3646^2 + 1718^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030 + ... + 6050.

Almost surely, 2^16244840 is an apocalyptic number.

16244840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16244840 is an abundant number, since it is smaller than the sum of its proper divisors (20677120).

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

16244840 is a wasteful number, since it uses less digits than its factorization.

16244840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133 (or 4129 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 16244840 is about 4030.4888041030. The cubic root of 16244840 is about 253.2630383603.

The spelling of 16244840 in words is "sixteen million, two hundred forty-four thousand, eight hundred forty".