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51230396 = 22713913163
BaseRepresentation
bin1100001101101…
…1011010111100
310120101202220002
43003123122330
5101103333041
65030013432
71161310520
oct303333274
9116352802
1051230396
1126a11178
12151a7278
13a7c9459
146b37d80
15476e59b
hex30db6bc

51230396 has 24 divisors (see below), whose sum is σ = 103205760. Its totient is φ = 21796272.

The previous prime is 51230393. The next prime is 51230419. The reversal of 51230396 is 69303215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51230393) 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, 2690 + ... + 10473.

It is an arithmetic number, because the mean of its divisors is an integer number (4300240).

Almost surely, 251230396 is an apocalyptic number.

It is an amenable number.

51230396 is an abundant number, since it is smaller than the sum of its proper divisors (51975364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51230396 is a wasteful number, since it uses less digits than its factorization.

51230396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13313 (or 13311 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 51230396 is about 7157.5411979254. The cubic root of 51230396 is about 371.4005743056.

The spelling of 51230396 in words is "fifty-one million, two hundred thirty thousand, three hundred ninety-six".

Divisors: 1 2 4 7 14 28 139 278 556 973 1946 3892 13163 26326 52652 92141 184282 368564 1829657 3659314 7318628 12807599 25615198 51230396