28069461 has 24 divisors (see below), whose sum is σ = 47471424. Its totient is φ = 15647040.

The previous prime is 28069451. The next prime is 28069471. The reversal of 28069461 is 16496082.

It is an interprime number because it is at equal distance from previous prime (28069451) and next prime (28069471).

It is not a de Polignac number, because 28069461 - 2⁹ = 28068949 is a prime.

It is a super-3 number, since 3×28069461³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28069451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2851 + ... + 8016.

It is an arithmetic number, because the mean of its divisors is an integer number (1977976).

Almost surely, 2^28069461 is an apocalyptic number.

28069461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28069461 is a deficient number, since it is larger than the sum of its proper divisors (19401963).

28069461 is a wasteful number, since it uses less digits than its factorization.

28069461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10921 (or 10918 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28069461 is about 5298.0620041672. The cubic root of 28069461 is about 303.9097904371.

The spelling of 28069461 in words is "twenty-eight million, sixty-nine thousand, four hundred sixty-one".