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238949361 = 32716323269
BaseRepresentation
bin11100011111000…
…01001111110001
3121122121212220100
432033201033301
5442132334421
635413303013
75631015240
oct1617411761
9548555810
10238949361
11112976212
1268034a69
133a673871
1423a40957
1515e9ec26
hexe3e13f1

238949361 has 24 divisors (see below), whose sum is σ = 396893120. Its totient is φ = 135698976.

The previous prime is 238949329. The next prime is 238949401. The reversal of 238949361 is 163949832.

It is a happy number.

238949361 is a `hidden beast` number, since 23 + 89 + 493 + 61 = 666.

It is not a de Polignac number, because 238949361 - 25 = 238949329 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238949311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1366 + ... + 21903.

Almost surely, 2238949361 is an apocalyptic number.

238949361 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

238949361 is a deficient number, since it is larger than the sum of its proper divisors (157943759).

238949361 is a wasteful number, since it uses less digits than its factorization.

238949361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23445 (or 23442 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 238949361 is about 15457.9869646730. The cubic root of 238949361 is about 620.5383470199.

The spelling of 238949361 in words is "two hundred thirty-eight million, nine hundred forty-nine thousand, three hundred sixty-one".

Divisors: 1 3 7 9 21 63 163 489 1141 1467 3423 10269 23269 69807 162883 209421 488649 1465947 3792847 11378541 26549929 34135623 79649787 238949361