28618155446 has 8 divisors (see below), whose sum is σ = 42955989984. Its totient is φ = 14299492120.

The previous prime is 28618155443. The next prime is 28618155493. The reversal of 28618155446 is 64455181682.

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

It is a super-2 number, since 2×28618155446² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28618155394 and 28618155403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28618155443) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4789070 + ... + 4795041.

It is an arithmetic number, because the mean of its divisors is an integer number (5369498748).

Almost surely, 2^28618155446 is an apocalyptic number.

28618155446 is a deficient number, since it is larger than the sum of its proper divisors (14337834538).

28618155446 is a wasteful number, since it uses less digits than its factorization.

28618155446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9585606.

The product of its digits is 1843200, while the sum is 50.

The spelling of 28618155446 in words is "twenty-eight billion, six hundred eighteen million, one hundred fifty-five thousand, four hundred forty-six".