28552147 has 8 divisors (see below), whose sum is σ = 31740800. Its totient is φ = 25505280.

The previous prime is 28552133. The next prime is 28552151. The reversal of 28552147 is 74125582.

It is a happy number.

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 28552147 - 2¹¹ = 28550099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28552127) 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, 35022 + ... + 35827.

It is an arithmetic number, because the mean of its divisors is an integer number (3967600).

Almost surely, 2^28552147 is an apocalyptic number.

28552147 is a deficient number, since it is larger than the sum of its proper divisors (3188653).

28552147 is a wasteful number, since it uses less digits than its factorization.

28552147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70893.

The product of its digits is 22400, while the sum is 34.

The square root of 28552147 is about 5343.4209079952. The cubic root of 28552147 is about 305.6419231237.

The spelling of 28552147 in words is "twenty-eight million, five hundred fifty-two thousand, one hundred forty-seven".