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272487993 = 390829331
BaseRepresentation
bin10000001111011…
…101011000111001
3200222201211020220
4100033131120321
51024224103433
643012210253
76516052431
oct2017353071
9628654226
10272487993
1112a8a3298
1277309989
13445b73cb
14282912c1
1518dc72b3
hex103dd639

272487993 has 4 divisors (see below), whose sum is σ = 363317328. Its totient is φ = 181658660.

The previous prime is 272487983. The next prime is 272487997. The reversal of 272487993 is 399784272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 272487993 - 25 = 272487961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (272487997) 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, 45414663 + ... + 45414668.

It is an arithmetic number, because the mean of its divisors is an integer number (90829332).

Almost surely, 2272487993 is an apocalyptic number.

It is an amenable number.

272487993 is a deficient number, since it is larger than the sum of its proper divisors (90829335).

272487993 is an equidigital number, since it uses as much as digits as its factorization.

272487993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90829334.

The product of its digits is 1524096, while the sum is 51.

The square root of 272487993 is about 16507.2103336693. The cubic root of 272487993 is about 648.3096061848.

The spelling of 272487993 in words is "two hundred seventy-two million, four hundred eighty-seven thousand, nine hundred ninety-three".

Divisors: 1 3 90829331 272487993