28226463428 has 12 divisors (see below), whose sum is σ = 49584131520. Its totient is φ = 14059568712.

The previous prime is 28226463427. The next prime is 28226463481. The reversal of 28226463428 is 82436462282.

It is a super-2 number, since 2×28226463428² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28226463427) 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 3 ways as a sum of consecutive naturals, for example, 13414568 + ... + 13416671.

It is an arithmetic number, because the mean of its divisors is an integer number (4132010960).

Almost surely, 2^28226463428 is an apocalyptic number.

It is an amenable number.

28226463428 is a deficient number, since it is larger than the sum of its proper divisors (21357668092).

28226463428 is a wasteful number, since it uses less digits than its factorization.

28226463428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26831506 (or 26831504 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 47.

The spelling of 28226463428 in words is "twenty-eight billion, two hundred twenty-six million, four hundred sixty-three thousand, four hundred twenty-eight".