28410397 has 4 divisors (see below), whose sum is σ = 28438236. Its totient is φ = 28382560.

The previous prime is 28410379. The next prime is 28410409. The reversal of 28410397 is 79301482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10929636 + 17480761 = 3306^2 + 4181^2 .

It is a cyclic number.

It is not a de Polignac number, because 28410397 - 2⁷ = 28410269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28410307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12328 + ... + 14449.

It is an arithmetic number, because the mean of its divisors is an integer number (7109559).

Almost surely, 2^28410397 is an apocalyptic number.

It is an amenable number.

28410397 is a deficient number, since it is larger than the sum of its proper divisors (27839).

28410397 is a wasteful number, since it uses less digits than its factorization.

28410397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27838.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 28410397 is about 5330.1404296697. The cubic root of 28410397 is about 305.1352871115.

The spelling of 28410397 in words is "twenty-eight million, four hundred ten thousand, three hundred ninety-seven".