Search a number
-
+
51884208 = 2432360307
BaseRepresentation
bin1100010111101…
…1000010110000
310121121222202100
43011323002300
5101240243313
65052020400
71200002625
oct305730260
9117558670
1051884208
1127318412
1215461700
13a997c1c
146c6834c
15484d173
hex317b0b0

51884208 has 30 divisors (see below), whose sum is σ = 145204124. Its totient is φ = 17294688.

The previous prime is 51884201. The next prime is 51884227. The reversal of 51884208 is 80248815.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51884201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180010 + ... + 180297.

Almost surely, 251884208 is an apocalyptic number.

It is an amenable number.

51884208 is an abundant number, since it is smaller than the sum of its proper divisors (93319916).

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

51884208 is a wasteful number, since it uses less digits than its factorization.

51884208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360321 (or 360312 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 51884208 is about 7203.0693457720. The cubic root of 51884208 is about 372.9738617530.

The spelling of 51884208 in words is "fifty-one million, eight hundred eighty-four thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 360307 720614 1080921 1441228 2161842 2882456 3242763 4323684 5764912 6485526 8647368 12971052 17294736 25942104 51884208