28649461 has 8 divisors (see below), whose sum is σ = 29352960. Its totient is φ = 27949968.

The previous prime is 28649459. The next prime is 28649483. The reversal of 28649461 is 16494682.

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

It is a cyclic number.

It is not a de Polignac number, because 28649461 - 2¹ = 28649459 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 (28649561) 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, 17500 + ... + 19066.

It is an arithmetic number, because the mean of its divisors is an integer number (3669120).

Almost surely, 2^28649461 is an apocalyptic number.

It is an amenable number.

28649461 is a deficient number, since it is larger than the sum of its proper divisors (703499).

28649461 is a wasteful number, since it uses less digits than its factorization.

28649461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003.

The product of its digits is 82944, while the sum is 40.

The square root of 28649461 is about 5352.5191265422. The cubic root of 28649461 is about 305.9887681525.

The spelling of 28649461 in words is "twenty-eight million, six hundred forty-nine thousand, four hundred sixty-one".