28147349 has 8 divisors (see below), whose sum is σ = 29234688. Its totient is φ = 27071280.

The previous prime is 28147321. The next prime is 28147351. The reversal of 28147349 is 94374182.

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 28147349 - 2¹⁶ = 28081813 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 (28147309) 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, 2459 + ... + 7895.

It is an arithmetic number, because the mean of its divisors is an integer number (3654336).

Almost surely, 2^28147349 is an apocalyptic number.

It is an amenable number.

28147349 is a deficient number, since it is larger than the sum of its proper divisors (1087339).

28147349 is a wasteful number, since it uses less digits than its factorization.

28147349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635.

The product of its digits is 48384, while the sum is 38.

The square root of 28147349 is about 5305.4075244038. The cubic root of 28147349 is about 304.1906302339.

The spelling of 28147349 in words is "twenty-eight million, one hundred forty-seven thousand, three hundred forty-nine".