16236240 has 40 divisors (see below), whose sum is σ = 50333088. Its totient is φ = 4329600.

The previous prime is 16236221. The next prime is 16236247. The reversal of 16236240 is 4263261.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16236240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16236247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33586 + ... + 34065.

Almost surely, 2^16236240 is an apocalyptic number.

16236240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16236240 is an abundant number, since it is smaller than the sum of its proper divisors (34096848).

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

16236240 is a wasteful number, since it uses less digits than its factorization.

16236240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67667 (or 67661 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 16236240 is about 4029.4217947492. The cubic root of 16236240 is about 253.2183380822.

The spelling of 16236240 in words is "sixteen million, two hundred thirty-six thousand, two hundred forty".