28014147 has 32 divisors (see below), whose sum is σ = 50227200. Its totient is φ = 15064704.

The previous prime is 28014139. The next prime is 28014149. The reversal of 28014147 is 74141082.

It is not a de Polignac number, because 28014147 - 2³ = 28014139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 28014147.

It is not an unprimeable number, because it can be changed into a prime (28014149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1147 + ... + 7572.

It is an arithmetic number, because the mean of its divisors is an integer number (1569600).

Almost surely, 2^28014147 is an apocalyptic number.

28014147 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28014147 is a deficient number, since it is larger than the sum of its proper divisors (22213053).

28014147 is a wasteful number, since it uses less digits than its factorization.

28014147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8752 (or 8746 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 28014147 is about 5292.8392191715. The cubic root of 28014147 is about 303.7100297962.

The spelling of 28014147 in words is "twenty-eight million, fourteen thousand, one hundred forty-seven".