28020966446 has 32 divisors (see below), whose sum is σ = 47015700480. Its totient is φ = 12414283200.

The previous prime is 28020966419. The next prime is 28020966451. The reversal of 28020966446 is 64466902082.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28020966446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966185 + ... + 994763.

It is an arithmetic number, because the mean of its divisors is an integer number (1469240640).

Almost surely, 2^28020966446 is an apocalyptic number.

28020966446 is a deficient number, since it is larger than the sum of its proper divisors (18994734034).

28020966446 is a wasteful number, since it uses less digits than its factorization.

28020966446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29720.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 28020966446 in words is "twenty-eight billion, twenty million, nine hundred sixty-six thousand, four hundred forty-six".