16244720 has 40 divisors (see below), whose sum is σ = 37966320. Its totient is φ = 6464000.

The previous prime is 16244699. The next prime is 16244737. The reversal of 16244720 is 2744261.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 16244720.

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, 19676 + ... + 20484.

It is an arithmetic number, because the mean of its divisors is an integer number (949158).

Almost surely, 2^16244720 is an apocalyptic number.

16244720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16244720 is an abundant number, since it is smaller than the sum of its proper divisors (21721600).

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

16244720 is a wasteful number, since it uses less digits than its factorization.

16244720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 16244720 is about 4030.4739175437. The cubic root of 16244720 is about 253.2624147440.

Adding to 16244720 its reverse (2744261), we get a palindrome (18988981).

The spelling of 16244720 in words is "sixteen million, two hundred forty-four thousand, seven hundred twenty".