Search a number
-
+
28572799 = 791013581
BaseRepresentation
bin110110011111…
…1110001111111
31222202122111211
41230333301333
524303312144
62500225251
7464602423
oct154776177
958678454
1028572799
1115146192
12969b227
135bc54a8
143b1ab83
152796034
hex1b3fc7f

28572799 has 8 divisors (see below), whose sum is σ = 29229120. Its totient is φ = 27924000.

The previous prime is 28572787. The next prime is 28572809. The reversal of 28572799 is 99727582.

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 28572799 - 219 = 28048511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6189 + ... + 9769.

It is an arithmetic number, because the mean of its divisors is an integer number (3653640).

Almost surely, 228572799 is an apocalyptic number.

28572799 is a deficient number, since it is larger than the sum of its proper divisors (656321).

28572799 is a wasteful number, since it uses less digits than its factorization.

28572799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3761.

The product of its digits is 635040, while the sum is 49.

The square root of 28572799 is about 5345.3530285660. The cubic root of 28572799 is about 305.7155964594.

The spelling of 28572799 in words is "twenty-eight million, five hundred seventy-two thousand, seven hundred ninety-nine".

Divisors: 1 79 101 3581 7979 282899 361681 28572799