28432461 has 8 divisors (see below), whose sum is σ = 38090464. Its totient is φ = 18864720.

The previous prime is 28432421. The next prime is 28432471. The reversal of 28432461 is 16423482.

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

It is not a de Polignac number, because 28432461 - 2⁷ = 28432333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28432421) 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 7 ways as a sum of consecutive naturals, for example, 21826 + ... + 23091.

It is an arithmetic number, because the mean of its divisors is an integer number (4761308).

Almost surely, 2^28432461 is an apocalyptic number.

It is an amenable number.

28432461 is a deficient number, since it is larger than the sum of its proper divisors (9658003).

28432461 is a wasteful number, since it uses less digits than its factorization.

28432461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45131.

The product of its digits is 9216, while the sum is 30.

The square root of 28432461 is about 5332.2097670666. The cubic root of 28432461 is about 305.2142577652.

The spelling of 28432461 in words is "twenty-eight million, four hundred thirty-two thousand, four hundred sixty-one".