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28856049 = 330413163
BaseRepresentation
bin110111000010…
…0111011110001
32000022001001120
41232010323301
524341343144
62510252453
7500162265
oct156047361
960261046
1028856049
1115319a82
1297b7129
135c943b1
143b920a5
1527eee19
hex1b84ef1

28856049 has 8 divisors (see below), whose sum is σ = 38499552. Its totient is φ = 19224960.

The previous prime is 28856039. The next prime is 28856059. The reversal of 28856049 is 94065882.

It is an interprime number because it is at equal distance from previous prime (28856039) and next prime (28856059).

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

It is not a de Polignac number, because 28856049 - 216 = 28790513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28856049.

It is not an unprimeable number, because it can be changed into a prime (28856039) 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, 7542 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (4812444).

Almost surely, 228856049 is an apocalyptic number.

It is an amenable number.

28856049 is a deficient number, since it is larger than the sum of its proper divisors (9643503).

28856049 is a wasteful number, since it uses less digits than its factorization.

28856049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 28856049 is about 5371.7826650005. The cubic root of 28856049 is about 306.7224907564.

The spelling of 28856049 in words is "twenty-eight million, eight hundred fifty-six thousand, forty-nine".

Divisors: 1 3 3041 3163 9123 9489 9618683 28856049