28028436486 has 16 divisors (see below), whose sum is σ = 59354336304. Its totient is φ = 8793234944.

The previous prime is 28028436467. The next prime is 28028436487. The reversal of 28028436486 is 68463482082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28028436487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137394195 + ... + 137394398.

It is an arithmetic number, because the mean of its divisors is an integer number (3709646019).

Almost surely, 2^28028436486 is an apocalyptic number.

28028436486 is an abundant number, since it is smaller than the sum of its proper divisors (31325899818).

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

28028436486 is a wasteful number, since it uses less digits than its factorization.

28028436486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274788615.

The product of its (nonzero) digits is 3538944, while the sum is 51.

The spelling of 28028436486 in words is "twenty-eight billion, twenty-eight million, four hundred thirty-six thousand, four hundred eighty-six".