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28525713 = 353179407
BaseRepresentation
bin110110011010…
…0010010010001
31222200020220220
41230310102101
524300310323
62455223253
7464315226
oct154642221
958606826
1028525713
1115113877
129677b29
135ba9c28
143b0794d
1527870e3
hex1b34491

28525713 has 8 divisors (see below), whose sum is σ = 38752128. Its totient is φ = 18658224.

The previous prime is 28525691. The next prime is 28525753. The reversal of 28525713 is 31752582.

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

It is not a de Polignac number, because 28525713 - 26 = 28525649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28525753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89545 + ... + 89862.

It is an arithmetic number, because the mean of its divisors is an integer number (4844016).

Almost surely, 228525713 is an apocalyptic number.

It is an amenable number.

28525713 is a deficient number, since it is larger than the sum of its proper divisors (10226415).

28525713 is a wasteful number, since it uses less digits than its factorization.

28525713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179463.

The product of its digits is 16800, while the sum is 33.

The square root of 28525713 is about 5340.9468261723. The cubic root of 28525713 is about 305.5475713959.

The spelling of 28525713 in words is "twenty-eight million, five hundred twenty-five thousand, seven hundred thirteen".

Divisors: 1 3 53 159 179407 538221 9508571 28525713