16242240 has 112 divisors (see below), whose sum is σ = 58960512. Its totient is φ = 3710976.

The previous prime is 16242227. The next prime is 16242251. The reversal of 16242240 is 4224261.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 5512 + ... + 7928.

Almost surely, 2^16242240 is an apocalyptic number.

16242240 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 16242240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29480256).

16242240 is an abundant number, since it is smaller than the sum of its proper divisors (42718272).

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

16242240 is a wasteful number, since it uses less digits than its factorization.

16242240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444 (or 2434 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 16242240 is about 4030.1662496726. The cubic root of 16242240 is about 253.2495259869.

The spelling of 16242240 in words is "sixteen million, two hundred forty-two thousand, two hundred forty".