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28576297 = 971511951
BaseRepresentation
bin110110100000…
…0101000101001
31222202211022101
41231000220221
524303420142
62500253401
7464615551
oct155005051
958684271
1028576297
1115148882
1296a1261
135bc6c69
143b1c161
1527970b7
hex1b40a29

28576297 has 8 divisors (see below), whose sum is σ = 29076992. Its totient is φ = 28080000.

The previous prime is 28576291. The next prime is 28576309. The reversal of 28576297 is 79267582.

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 28576297 - 223 = 20187689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28576291) 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, 13672 + ... + 15622.

It is an arithmetic number, because the mean of its divisors is an integer number (3634624).

Almost surely, 228576297 is an apocalyptic number.

It is an amenable number.

28576297 is a deficient number, since it is larger than the sum of its proper divisors (500695).

28576297 is a wasteful number, since it uses less digits than its factorization.

28576297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199.

The product of its digits is 423360, while the sum is 46.

The square root of 28576297 is about 5345.6802186438. The cubic root of 28576297 is about 305.7280716055.

The spelling of 28576297 in words is "twenty-eight million, five hundred seventy-six thousand, two hundred ninety-seven".

Divisors: 1 97 151 1951 14647 189247 294601 28576297