28347549407 has 2 divisors, whose sum is σ = 28347549408. Its totient is φ = 28347549406.

The previous prime is 28347549383. The next prime is 28347549421. The reversal of 28347549407 is 70494574382.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28347549407 - 2²⁶ = 28280440543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28347549467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14173774703 + 14173774704.

It is an arithmetic number, because the mean of its divisors is an integer number (14173774704).

Almost surely, 2^28347549407 is an apocalyptic number.

28347549407 is a deficient number, since it is larger than the sum of its proper divisors (1).

28347549407 is an equidigital number, since it uses as much as digits as its factorization.

28347549407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 28347549407 in words is "twenty-eight billion, three hundred forty-seven million, five hundred forty-nine thousand, four hundred seven".