28347401019 has 32 divisors (see below), whose sum is σ = 44568299520. Its totient is φ = 15691658112.

The previous prime is 28347401011. The next prime is 28347401039. The reversal of 28347401019 is 91010474382.

It is not a de Polignac number, because 28347401019 - 2³ = 28347401011 is a prime.

It is a super-2 number, since 2×28347401019² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28347401011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73272 + ... + 249125.

It is an arithmetic number, because the mean of its divisors is an integer number (1392759360).

Almost surely, 2^28347401019 is an apocalyptic number.

28347401019 is a deficient number, since it is larger than the sum of its proper divisors (16220898501).

28347401019 is a wasteful number, since it uses less digits than its factorization.

28347401019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322539.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 28347401019 in words is "twenty-eight billion, three hundred forty-seven million, four hundred one thousand, nineteen".