28072148617446 has 32 divisors (see below), whose sum is σ = 58672318560768. Its totient is φ = 8945306136480.

The previous prime is 28072148617427. The next prime is 28072148617451. The reversal of 28072148617446 is 64471684127082.

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 28072148617446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1157506785 + ... + 1157531036.

It is an arithmetic number, because the mean of its divisors is an integer number (1833509955024).

Almost surely, 2^{28072148617446} is an apocalyptic number.

28072148617446 is an abundant number, since it is smaller than the sum of its proper divisors (30600169943322).

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

28072148617446 is a wasteful number, since it uses less digits than its factorization.

28072148617446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315037916.

The product of its (nonzero) digits is 28901376, while the sum is 60.

The spelling of 28072148617446 in words is "twenty-eight trillion, seventy-two billion, one hundred forty-eight million, six hundred seventeen thousand, four hundred forty-six".