28514749 has 8 divisors (see below), whose sum is σ = 29090880. Its totient is φ = 27943776.

The previous prime is 28514747. The next prime is 28514767. The reversal of 28514749 is 94741582.

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

It is not a de Polignac number, because 28514749 - 2¹ = 28514747 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 (28514741) 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, 11022 + ... + 13360.

It is an arithmetic number, because the mean of its divisors is an integer number (3636360).

Almost surely, 2^28514749 is an apocalyptic number.

It is an amenable number.

28514749 is a deficient number, since it is larger than the sum of its proper divisors (576131).

28514749 is a wasteful number, since it uses less digits than its factorization.

28514749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579.

The product of its digits is 80640, while the sum is 40.

The square root of 28514749 is about 5339.9203177576. The cubic root of 28514749 is about 305.5084201354.

The spelling of 28514749 in words is "twenty-eight million, five hundred fourteen thousand, seven hundred forty-nine".