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28049056 = 257125219
BaseRepresentation
bin110101011111…
…1111010100000
31221210001001221
41222333322200
524140032211
62441104424
7460261450
oct152777240
957701057
1028049056
1114918742
129488114
135a70c99
143a21d60
1526e0c71
hex1abfea0

28049056 has 24 divisors (see below), whose sum is σ = 63110880. Its totient is φ = 12020928.

The previous prime is 28049053. The next prime is 28049059. The reversal of 28049056 is 65094082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28049053) and next prime (28049059).

It is a super-2 number, since 2×280490562 = 1573499084982272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28049053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62386 + ... + 62833.

It is an arithmetic number, because the mean of its divisors is an integer number (2629620).

Almost surely, 228049056 is an apocalyptic number.

It is an amenable number.

28049056 is an abundant number, since it is smaller than the sum of its proper divisors (35061824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28049056 is a wasteful number, since it uses less digits than its factorization.

28049056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125236 (or 125228 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 28049056 is about 5296.1359499167. The cubic root of 28049056 is about 303.8361305195.

The spelling of 28049056 in words is "twenty-eight million, forty-nine thousand, fifty-six".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 125219 250438 500876 876533 1001752 1753066 2003504 3506132 4007008 7012264 14024528 28049056