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23443380 = 22325130241
BaseRepresentation
bin101100101101…
…1011110110100
31122010001021100
41121123132310
522000142010
62154250100
7403160022
oct131333664
948101240
1023443380
11122623a4
127a26930
134b1a82c
143183712
1520d12c0
hex165b7b4

23443380 has 36 divisors (see below), whose sum is σ = 71112132. Its totient is φ = 6251520.

The previous prime is 23443373. The next prime is 23443411. The reversal of 23443380 is 8334432.

It can be written as a sum of positive squares in 2 ways, for example, as 11249316 + 12194064 = 3354^2 + 3492^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64941 + ... + 65300.

It is an arithmetic number, because the mean of its divisors is an integer number (1975337).

Almost surely, 223443380 is an apocalyptic number.

23443380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23443380 is an abundant number, since it is smaller than the sum of its proper divisors (47668752).

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

23443380 is a wasteful number, since it uses less digits than its factorization.

23443380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130256 (or 130251 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 23443380 is about 4841.8364284639. The cubic root of 23443380 is about 286.2024907963.

The spelling of 23443380 in words is "twenty-three million, four hundred forty-three thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 130241 260482 390723 520964 651205 781446 1172169 1302410 1562892 1953615 2344338 2604820 3907230 4688676 5860845 7814460 11721690 23443380