Search a number
-
+
51830492 = 2271851089
BaseRepresentation
bin1100010110110…
…1111011011100
310121112021001212
43011231323130
5101232033432
65050523552
71166360210
oct305557334
9117467055
1051830492
112729101a
12154365b8
13a97963c
146c52940
15483c2b2
hex316dedc

51830492 has 12 divisors (see below), whose sum is σ = 103661040. Its totient is φ = 22213056.

The previous prime is 51830491. The next prime is 51830507. The reversal of 51830492 is 29403815.

51830492 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51830491) 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, 925517 + ... + 925572.

It is an arithmetic number, because the mean of its divisors is an integer number (8638420).

Almost surely, 251830492 is an apocalyptic number.

It is an amenable number.

51830492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51830492 is a wasteful number, since it uses less digits than its factorization.

51830492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851100 (or 1851098 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 51830492 is about 7199.3396919440. The cubic root of 51830492 is about 372.8451033587.

The spelling of 51830492 in words is "fifty-one million, eight hundred thirty thousand, four hundred ninety-two".

Divisors: 1 2 4 7 14 28 1851089 3702178 7404356 12957623 25915246 51830492