28252452567646 has 16 divisors (see below), whose sum is σ = 43745945908608. Its totient is φ = 13670475033600.

The previous prime is 28252452567641. The next prime is 28252452567701. The reversal of 28252452567646 is 64676525425282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28252452567641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13213206 + ... + 15201766.

It is an arithmetic number, because the mean of its divisors is an integer number (2734121619288).

Almost surely, 2^{28252452567646} is an apocalyptic number.

28252452567646 is a deficient number, since it is larger than the sum of its proper divisors (15493493340962).

28252452567646 is a wasteful number, since it uses less digits than its factorization.

28252452567646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217747.

The product of its digits is 387072000, while the sum is 64.

The spelling of 28252452567646 in words is "twenty-eight trillion, two hundred fifty-two billion, four hundred fifty-two million, five hundred sixty-seven thousand, six hundred forty-six".