28001554308534 has 16 divisors (see below), whose sum is σ = 56050933659840. Its totient is φ = 9325880595720.

The previous prime is 28001554308529. The next prime is 28001554308569. The reversal of 28001554308534 is 43580345510082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992702504 + ... + 1992716555.

It is an arithmetic number, because the mean of its divisors is an integer number (3503183353740).

Almost surely, 2^{28001554308534} is an apocalyptic number.

28001554308534 is an abundant number, since it is smaller than the sum of its proper divisors (28049379351306).

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

28001554308534 is a wasteful number, since it uses less digits than its factorization.

28001554308534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985420235.

The product of its (nonzero) digits is 2304000, while the sum is 48.

The spelling of 28001554308534 in words is "twenty-eight trillion, one billion, five hundred fifty-four million, three hundred eight thousand, five hundred thirty-four".