28420583 has 16 divisors (see below), whose sum is σ = 31334400. Its totient is φ = 25660800.

The previous prime is 28420577. The next prime is 28420589. The reversal of 28420583 is 38502482.

It is an interprime number because it is at equal distance from previous prime (28420577) and next prime (28420589).

It is a cyclic number.

It is not a de Polignac number, because 28420583 - 2²⁴ = 11643367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28420589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104738 + ... + 105008.

It is an arithmetic number, because the mean of its divisors is an integer number (1958400).

Almost surely, 2^28420583 is an apocalyptic number.

28420583 is a deficient number, since it is larger than the sum of its proper divisors (2913817).

28420583 is a wasteful number, since it uses less digits than its factorization.

28420583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 28420583 is about 5331.0958535746. The cubic root of 28420583 is about 305.1717495453.

The spelling of 28420583 in words is "twenty-eight million, four hundred twenty thousand, five hundred eighty-three".