28348912721454 has 32 divisors (see below), whose sum is σ = 64650914082720. Its totient is φ = 8209639882752.

The previous prime is 28348912721447. The next prime is 28348912721489. The reversal of 28348912721454 is 45412721984382.

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, 10689633939 + ... + 10689636590.

It is an arithmetic number, because the mean of its divisors is an integer number (2020341065085).

Almost surely, 2^{28348912721454} is an apocalyptic number.

28348912721454 is an abundant number, since it is smaller than the sum of its proper divisors (36302001361266).

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

28348912721454 is a wasteful number, since it uses less digits than its factorization.

28348912721454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21379270564.

The product of its digits is 30965760, while the sum is 60.

The spelling of 28348912721454 in words is "twenty-eight trillion, three hundred forty-eight billion, nine hundred twelve million, seven hundred twenty-one thousand, four hundred fifty-four".