28294413 has 32 divisors (see below), whose sum is σ = 45465600. Its totient is φ = 15629040.

The previous prime is 28294397. The next prime is 28294429. The reversal of 28294413 is 31449282.

It is an interprime number because it is at equal distance from previous prime (28294397) and next prime (28294429).

It is not a de Polignac number, because 28294413 - 2⁴ = 28294397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28294433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31456 + ... + 32342.

It is an arithmetic number, because the mean of its divisors is an integer number (1420800).

Almost surely, 2^28294413 is an apocalyptic number.

It is an amenable number.

28294413 is a deficient number, since it is larger than the sum of its proper divisors (17171187).

28294413 is an equidigital number, since it uses as much as digits as its factorization.

28294413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 928 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 28294413 is about 5319.2492891385. The cubic root of 28294413 is about 304.7194876765.

The spelling of 28294413 in words is "twenty-eight million, two hundred ninety-four thousand, four hundred thirteen".