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247426 = 2193641
BaseRepresentation
bin111100011010000010
3110120101221
4330122002
530404201
65145254
72050234
oct743202
9416357
10247426
11159993
12bb22a
138880a
1466254
154d4a1
hex3c682

247426 has 8 divisors (see below), whose sum is σ = 373644. Its totient is φ = 122880.

The previous prime is 247421. The next prime is 247433. The reversal of 247426 is 624742.

It can be written as a sum of positive squares in 2 ways, for example, as 245025 + 2401 = 495^2 + 49^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2474262 = 122439250952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247426.

It is not an unprimeable number, because it can be changed into a prime (247421) 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, 66 + ... + 706.

2247426 is an apocalyptic number.

247426 is a deficient number, since it is larger than the sum of its proper divisors (126218).

247426 is a wasteful number, since it uses less digits than its factorization.

247426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its digits is 2688, while the sum is 25.

The square root of 247426 is about 497.4193401950. The cubic root of 247426 is about 62.7791037621.

It can be divided in two parts, 2474 and 26, that added together give a square (2500 = 502).

The spelling of 247426 in words is "two hundred forty-seven thousand, four hundred twenty-six".

Divisors: 1 2 193 386 641 1282 123713 247426