28740147 has 8 divisors (see below), whose sum is σ = 38751120. Its totient is φ = 18944640.

The previous prime is 28740113. The next prime is 28740169. The reversal of 28740147 is 74104782.

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

It is not a de Polignac number, because 28740147 - 2⁸ = 28739891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28720147) 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, 53554 + ... + 54087.

It is an arithmetic number, because the mean of its divisors is an integer number (4843890).

Almost surely, 2^28740147 is an apocalyptic number.

28740147 is a deficient number, since it is larger than the sum of its proper divisors (10010973).

28740147 is a wasteful number, since it uses less digits than its factorization.

28740147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107733.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 28740147 is about 5360.9837716598. The cubic root of 28740147 is about 306.3112834737.

The spelling of 28740147 in words is "twenty-eight million, seven hundred forty thousand, one hundred forty-seven".