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27954157 = 731131239
BaseRepresentation
bin110101010100…
…0101111101101
31221121012220011
41222220233231
524124013112
62435053221
7456415000
oct152505755
957535804
1027954157
1114863410
129441211
135a39a2a
1439d9537
1526c2aa7
hex1aa8bed

27954157 has 32 divisors (see below), whose sum is σ = 36864000. Its totient is φ = 20991600.

The previous prime is 27954133. The next prime is 27954163. The reversal of 27954157 is 75145972.

It is not a de Polignac number, because 27954157 - 27 = 27954029 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 (27954107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116844 + ... + 117082.

It is an arithmetic number, because the mean of its divisors is an integer number (1152000).

Almost surely, 227954157 is an apocalyptic number.

It is an amenable number.

27954157 is a deficient number, since it is larger than the sum of its proper divisors (8909843).

27954157 is a wasteful number, since it uses less digits than its factorization.

27954157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 288 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 27954157 is about 5287.1690913002. The cubic root of 27954157 is about 303.4930848194.

The spelling of 27954157 in words is "twenty-seven million, nine hundred fifty-four thousand, one hundred fifty-seven".

Divisors: 1 7 11 31 49 77 217 239 341 343 539 1519 1673 2387 2629 3773 7409 10633 11711 16709 18403 51863 81499 81977 116963 128821 363041 570493 901747 2541287 3993451 27954157