28280447807590 has 32 divisors (see below), whose sum is σ = 55624916017440. Its totient is φ = 10266688032000.

The previous prime is 28280447807587. The next prime is 28280447807657. The reversal of 28280447807590 is 9570874408282.

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, 213823225 + ... + 213955444.

It is an arithmetic number, because the mean of its divisors is an integer number (1738278625545).

Almost surely, 2^{28280447807590} is an apocalyptic number.

28280447807590 is a deficient number, since it is larger than the sum of its proper divisors (27344468209850).

28280447807590 is a wasteful number, since it uses less digits than its factorization.

28280447807590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427779288.

The product of its (nonzero) digits is 72253440, while the sum is 64.

The spelling of 28280447807590 in words is "twenty-eight trillion, two hundred eighty billion, four hundred forty-seven million, eight hundred seven thousand, five hundred ninety".