28724424210 has 48 divisors (see below), whose sum is σ = 75228670296. Its totient is φ = 7603931904.

The previous prime is 28724424203. The next prime is 28724424217. The reversal of 28724424210 is 1242442782.

It is an interprime number because it is at equal distance from previous prime (28724424203) and next prime (28724424217).

It can be written as a sum of positive squares in 4 ways, for example, as 28660119849 + 64304361 = 169293^2 + 8019^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28724424217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1152489 + ... + 1177148.

Almost surely, 2^28724424210 is an apocalyptic number.

28724424210 is an abundant number, since it is smaller than the sum of its proper divisors (46504246086).

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

28724424210 is a wasteful number, since it uses less digits than its factorization.

28724424210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329787 (or 2329784 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 36.

Adding to 28724424210 its reverse (1242442782), we get a palindrome (29966866992).

The spelling of 28724424210 in words is "twenty-eight billion, seven hundred twenty-four million, four hundred twenty-four thousand, two hundred ten".