28077320426 has 16 divisors (see below), whose sum is σ = 45134872704. Its totient is φ = 13065356304.

The previous prime is 28077320423. The next prime is 28077320431. The reversal of 28077320426 is 62402377082.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28077320423) 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 7 ways as a sum of consecutive naturals, for example, 8246630 + ... + 8250033.

It is an arithmetic number, because the mean of its divisors is an integer number (2820929544).

Almost surely, 2^28077320426 is an apocalyptic number.

28077320426 is a deficient number, since it is larger than the sum of its proper divisors (17057552278).

28077320426 is a wasteful number, since it uses less digits than its factorization.

28077320426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16496725.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 28077320426 in words is "twenty-eight billion, seventy-seven million, three hundred twenty thousand, four hundred twenty-six".