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52418988 = 2235199271
BaseRepresentation
bin1100011111110…
…1100110101100
310122122011100000
43013331212230
5101404401423
65111304300
71204361016
oct307754654
9118564300
1052418988
1127653186
121567b090
13ab2446b
146d671b6
154906843
hex31fd9ac

52418988 has 72 divisors (see below), whose sum is σ = 138611200. Its totient is φ = 17321040.

The previous prime is 52418983. The next prime is 52419011. The reversal of 52418988 is 88981425.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52418983) 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, 193293 + ... + 193563.

Almost surely, 252418988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52418988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69305600).

52418988 is an abundant number, since it is smaller than the sum of its proper divisors (86192212).

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

52418988 is a wasteful number, since it uses less digits than its factorization.

52418988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 475 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 52418988 is about 7240.0958557190. The cubic root of 52418988 is about 374.2509206768.

The spelling of 52418988 in words is "fifty-two million, four hundred eighteen thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 199 243 271 324 398 486 542 597 796 813 972 1084 1194 1626 1791 2388 2439 3252 3582 4878 5373 7164 7317 9756 10746 14634 16119 21492 21951 29268 32238 43902 48357 53929 64476 65853 87804 96714 107858 131706 161787 193428 215716 263412 323574 485361 647148 970722 1456083 1941444 2912166 4368249 5824332 8736498 13104747 17472996 26209494 52418988