28930501 has 2 divisors, whose sum is σ = 28930502. Its totient is φ = 28930500.

The previous prime is 28930493. The next prime is 28930567. The reversal of 28930501 is 10503982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28879876 + 50625 = 5374^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 28930501 - 2³ = 28930493 is a prime.

It is a super-2 number, since 2×28930501² = 1673947776222002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28930501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28930571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14465250 + 14465251.

It is an arithmetic number, because the mean of its divisors is an integer number (14465251).

Almost surely, 2^28930501 is an apocalyptic number.

It is an amenable number.

28930501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28930501 is an equidigital number, since it uses as much as digits as its factorization.

28930501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 28930501 is about 5378.7081162673. The cubic root of 28930501 is about 306.9860575743.

The spelling of 28930501 in words is "twenty-eight million, nine hundred thirty thousand, five hundred one".