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523123380 = 2233513431733
BaseRepresentation
bin11111001011100…
…011101010110100
31100110100102101000
4133023203222310
52032404422010
6123524203300
715651322023
oct3713435264
91313312330
10523123380
1124932037a
12127239530
13844c0080
144d6948ba
1530dd47c0
hex1f2e3ab4

523123380 has 192 divisors, whose sum is σ = 1794481920. Its totient is φ = 125701632.

The previous prime is 523123379. The next prime is 523123397. The reversal of 523123380 is 83321325.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 300994 + ... + 302726.

It is an arithmetic number, because the mean of its divisors is an integer number (9346260).

Almost surely, 2523123380 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 523123380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897240960).

523123380 is an abundant number, since it is smaller than the sum of its proper divisors (1271358540).

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

523123380 is a wasteful number, since it uses less digits than its factorization.

523123380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 523123380 is about 22871.8906083428. The cubic root of 523123380 is about 805.7519714960.

The spelling of 523123380 in words is "five hundred twenty-three million, one hundred twenty-three thousand, three hundred eighty".