28260408866704 has 45 divisors (see below), whose sum is σ = 63694394752347. Its totient is φ = 12111540007392.

The previous prime is 28260408866689. The next prime is 28260408866741. The reversal of 28260408866704 is 40766880406282.

The square root of 28260408866704 is 5316052.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 148754527 + ... + 148944385.

Almost surely, 2^{28260408866704} is an apocalyptic number.

28260408866704 is the 5316052-nd square number.

It is an amenable number.

28260408866704 is an abundant number, since it is smaller than the sum of its proper divisors (35433985885643).

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

28260408866704 is an frugal number, since it uses more digits than its factorization.

28260408866704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379740 (or 189868 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 61.

The spelling of 28260408866704 in words is "twenty-eight trillion, two hundred sixty billion, four hundred eight million, eight hundred sixty-six thousand, seven hundred four".