24240728 has 16 divisors (see below), whose sum is σ = 45870000. Its totient is φ = 12008736.

The previous prime is 24240721. The next prime is 24240737. The reversal of 24240728 is 82704242.

It is a super-2 number, since 2×24240728² = 1175225787939968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 24240728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24240721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13028 + ... + 14771.

It is an arithmetic number, because the mean of its divisors is an integer number (2866875).

Almost surely, 2^24240728 is an apocalyptic number.

It is an amenable number.

24240728 is a deficient number, since it is larger than the sum of its proper divisors (21629272).

24240728 is a wasteful number, since it uses less digits than its factorization.

24240728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27914 (or 27910 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 24240728 is about 4923.4873819276. The cubic root of 24240728 is about 289.4111237008.

The spelling of 24240728 in words is "twenty-four million, two hundred forty thousand, seven hundred twenty-eight".