28749461 has 8 divisors (see below), whose sum is σ = 31486560. Its totient is φ = 26087472.

The previous prime is 28749449. The next prime is 28749467. The reversal of 28749461 is 16494782.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28749461 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 (28749467) 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, 17975 + ... + 19508.

It is an arithmetic number, because the mean of its divisors is an integer number (3935820).

Almost surely, 2^28749461 is an apocalyptic number.

It is an amenable number.

28749461 is a deficient number, since it is larger than the sum of its proper divisors (2737099).

28749461 is a wasteful number, since it uses less digits than its factorization.

28749461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37555.

The product of its digits is 96768, while the sum is 41.

The square root of 28749461 is about 5361.8523851371. The cubic root of 28749461 is about 306.3443693072.

The spelling of 28749461 in words is "twenty-eight million, seven hundred forty-nine thousand, four hundred sixty-one".