8724040428 has 54 divisors (see below), whose sum is σ = 20752370436. Its totient is φ = 2852469696.

The previous prime is 8724040411. The next prime is 8724040441. The reversal of 8724040428 is 8240404278.

It is a super-2 number, since 2×8724040428² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19089576 + ... + 19090032.

Almost surely, 2^8724040428 is an apocalyptic number.

It is an amenable number.

8724040428 is an abundant number, since it is smaller than the sum of its proper divisors (12028330008).

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

8724040428 is an equidigital number, since it uses as much as digits as its factorization.

8724040428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 39.

The square root of 8724040428 is about 93402.5718489593. The cubic root of 8724040428 is about 2058.6027874221.

The spelling of 8724040428 in words is "eight billion, seven hundred twenty-four million, forty thousand, four hundred twenty-eight".