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253667047 = 1719937487
BaseRepresentation
bin11110001111010…
…10011011100111
3122200022121202211
433013222123213
51004414321142
641100544251
76200064034
oct1707523347
9580277684
10253667047
11120208897
1270b52087
134072785a
142599238b
151740a917
hexf1ea6e7

253667047 has 8 divisors (see below), whose sum is σ = 268759296. Its totient is φ = 238593792.

The previous prime is 253667009. The next prime is 253667053. The reversal of 253667047 is 740766352.

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 253667047 - 219 = 253142759 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 (253661047) 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, 30138 + ... + 37624.

It is an arithmetic number, because the mean of its divisors is an integer number (33594912).

Almost surely, 2253667047 is an apocalyptic number.

253667047 is a deficient number, since it is larger than the sum of its proper divisors (15092249).

253667047 is a wasteful number, since it uses less digits than its factorization.

253667047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9497.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 253667047 is about 15926.9283604843. The cubic root of 253667047 is about 633.0257129964.

The spelling of 253667047 in words is "two hundred fifty-three million, six hundred sixty-seven thousand, forty-seven".

Divisors: 1 17 1993 7487 33881 127279 14921591 253667047