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28126677 = 323407633
BaseRepresentation
bin110101101001…
…0110111010101
31221220222112210
41223102313111
524200023202
62442504033
7461033655
oct153226725
957828483
1028126677
1114970a97
129505019
135a9a407
143a42365
152708c6c
hex1ad2dd5

28126677 has 8 divisors (see below), whose sum is σ = 39132864. Its totient is φ = 17935808.

The previous prime is 28126661. The next prime is 28126691. The reversal of 28126677 is 77662182.

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 28126677 - 24 = 28126661 is a prime.

It is a super-2 number, since 2×281266772 = 1582219918124658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28126477) 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, 203748 + ... + 203885.

It is an arithmetic number, because the mean of its divisors is an integer number (4891608).

Almost surely, 228126677 is an apocalyptic number.

It is an amenable number.

28126677 is a deficient number, since it is larger than the sum of its proper divisors (11006187).

28126677 is a wasteful number, since it uses less digits than its factorization.

28126677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407659.

The product of its digits is 56448, while the sum is 39.

The square root of 28126677 is about 5303.4589656186. The cubic root of 28126677 is about 304.1161440157.

The spelling of 28126677 in words is "twenty-eight million, one hundred twenty-six thousand, six hundred seventy-seven".

Divisors: 1 3 23 69 407633 1222899 9375559 28126677