28565061 has 8 divisors (see below), whose sum is σ = 43527744. Its totient is φ = 16322880.

The previous prime is 28565059. The next prime is 28565063. The reversal of 28565061 is 16056582.

It is an interprime number because it is at equal distance from previous prime (28565059) and next prime (28565063).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28565061 - 2¹ = 28565059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28565063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680100 + ... + 680141.

It is an arithmetic number, because the mean of its divisors is an integer number (5440968).

Almost surely, 2^28565061 is an apocalyptic number.

28565061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28565061 is a deficient number, since it is larger than the sum of its proper divisors (14962683).

28565061 is a wasteful number, since it uses less digits than its factorization.

28565061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360251.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 28565061 is about 5344.6291732916. The cubic root of 28565061 is about 305.6879963065.

The spelling of 28565061 in words is "twenty-eight million, five hundred sixty-five thousand, sixty-one".