28361061 has 6 divisors (see below), whose sum is σ = 40965990. Its totient is φ = 18907368.

The previous prime is 28361057. The next prime is 28361141. The reversal of 28361061 is 16016382.

It can be written as a sum of positive squares in only one way, i.e., 23824161 + 4536900 = 4881^2 + 2130^2 .

It is not a de Polignac number, because 28361061 - 2² = 28361057 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 (28361041) 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 5 ways as a sum of consecutive naturals, for example, 1575606 + ... + 1575623.

It is an arithmetic number, because the mean of its divisors is an integer number (6827665).

Almost surely, 2^28361061 is an apocalyptic number.

It is an amenable number.

28361061 is a deficient number, since it is larger than the sum of its proper divisors (12604929).

28361061 is a wasteful number, since it uses less digits than its factorization.

28361061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151235 (or 3151232 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28361061 is about 5325.5103980745. The cubic root of 28361061 is about 304.9585574794.

The spelling of 28361061 in words is "twenty-eight million, three hundred sixty-one thousand, sixty-one".