28621515842 has 8 divisors (see below), whose sum is σ = 43659939600. Its totient is φ = 14068202644.

The previous prime is 28621515827. The next prime is 28621515847. The reversal of 28621515842 is 24851512682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28621515793 and 28621515802.

It is not an unprimeable number, because it can be changed into a prime (28621515847) 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, 121277492 + ... + 121277727.

It is an arithmetic number, because the mean of its divisors is an integer number (5457492450).

Almost surely, 2^28621515842 is an apocalyptic number.

28621515842 is a deficient number, since it is larger than the sum of its proper divisors (15038423758).

28621515842 is a wasteful number, since it uses less digits than its factorization.

28621515842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242555280.

The product of its digits is 307200, while the sum is 44.

The spelling of 28621515842 in words is "twenty-eight billion, six hundred twenty-one million, five hundred fifteen thousand, eight hundred forty-two".