28946261 has 2 divisors, whose sum is σ = 28946262. Its totient is φ = 28946260.

The previous prime is 28946251. The next prime is 28946273. The reversal of 28946261 is 16264982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 323761 = 5350^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 28946261 - 2¹⁴ = 28929877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28946201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14473130 + 14473131.

It is an arithmetic number, because the mean of its divisors is an integer number (14473131).

Almost surely, 2^28946261 is an apocalyptic number.

It is an amenable number.

28946261 is a deficient number, since it is larger than the sum of its proper divisors (1).

28946261 is an equidigital number, since it uses as much as digits as its factorization.

28946261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 28946261 is about 5380.1729526104. The cubic root of 28946261 is about 307.0417913944.

The spelling of 28946261 in words is "twenty-eight million, nine hundred forty-six thousand, two hundred sixty-one".