28524147 has 8 divisors (see below), whose sum is σ = 40269456. Its totient is φ = 17897472.

The previous prime is 28524143. The next prime is 28524157. The reversal of 28524147 is 74142582.

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

It is not a de Polignac number, because 28524147 - 2² = 28524143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28524143) 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, 279598 + ... + 279699.

It is an arithmetic number, because the mean of its divisors is an integer number (5033682).

Almost surely, 2^28524147 is an apocalyptic number.

28524147 is a deficient number, since it is larger than the sum of its proper divisors (11745309).

28524147 is a wasteful number, since it uses less digits than its factorization.

28524147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559317.

The product of its digits is 17920, while the sum is 33.

The square root of 28524147 is about 5340.8002209407. The cubic root of 28524147 is about 305.5419799931.

The spelling of 28524147 in words is "twenty-eight million, five hundred twenty-four thousand, one hundred forty-seven".