28912605446 has 32 divisors (see below), whose sum is σ = 46242828288. Its totient is φ = 13526108640.

The previous prime is 28912605419. The next prime is 28912605473. The reversal of 28912605446 is 64450621982.

It is an interprime number because it is at equal distance from previous prime (28912605419) and next prime (28912605473).

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28912605446.

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, 7030931 + ... + 7035041.

It is an arithmetic number, because the mean of its divisors is an integer number (1445088384).

Almost surely, 2^28912605446 is an apocalyptic number.

28912605446 is a deficient number, since it is larger than the sum of its proper divisors (17330222842).

28912605446 is a wasteful number, since it uses less digits than its factorization.

28912605446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7436.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 28912605446 in words is "twenty-eight billion, nine hundred twelve million, six hundred five thousand, four hundred forty-six".