28278867784602 has 64 divisors (see below), whose sum is σ = 58799465303040. Its totient is φ = 9060260759424.

The previous prime is 28278867784571. The next prime is 28278867784619. The reversal of 28278867784602 is 20648776887282.

It is a super-4 number, since 4×28278867784602⁴ (a number of 55 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6558013 + ... + 9978239.

It is an arithmetic number, because the mean of its divisors is an integer number (918741645360).

Almost surely, 2^{28278867784602} is an apocalyptic number.

28278867784602 is an abundant number, since it is smaller than the sum of its proper divisors (30520597518438).

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

28278867784602 is a wasteful number, since it uses less digits than its factorization.

28278867784602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420787.

The product of its (nonzero) digits is 1618477056, while the sum is 75.

The spelling of 28278867784602 in words is "twenty-eight trillion, two hundred seventy-eight billion, eight hundred sixty-seven million, seven hundred eighty-four thousand, six hundred two".