28374613 has 2 divisors, whose sum is σ = 28374614. Its totient is φ = 28374612.

The previous prime is 28374607. The next prime is 28374623. The reversal of 28374613 is 31647382.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28068804 + 305809 = 5298^2 + 553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28374613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28374623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14187306 + 14187307.

It is an arithmetic number, because the mean of its divisors is an integer number (14187307).

Almost surely, 2^28374613 is an apocalyptic number.

It is an amenable number.

28374613 is a deficient number, since it is larger than the sum of its proper divisors (1).

28374613 is an equidigital number, since it uses as much as digits as its factorization.

28374613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 28374613 is about 5326.7826124219. The cubic root of 28374613 is about 305.0071233667.

The spelling of 28374613 in words is "twenty-eight million, three hundred seventy-four thousand, six hundred thirteen".