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23155330 = 25111811163
BaseRepresentation
bin101100001010…
…1001010000010
31121120102010211
41120111022002
521411432310
62144144334
7400550152
oct130251202
947512124
1023155330
1112085a40
1279080aa
134a496a3
14310a762
152075c8a
hex1615282

23155330 has 32 divisors (see below), whose sum is σ = 45759168. Its totient is φ = 8366400.

The previous prime is 23155313. The next prime is 23155331. The reversal of 23155330 is 3355132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (23155331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19329 + ... + 20491.

It is an arithmetic number, because the mean of its divisors is an integer number (1429974).

Almost surely, 223155330 is an apocalyptic number.

23155330 is a deficient number, since it is larger than the sum of its proper divisors (22603838).

23155330 is a wasteful number, since it uses less digits than its factorization.

23155330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 23155330 is about 4811.9985453032. The cubic root of 23155330 is about 285.0254619706.

The spelling of 23155330 in words is "twenty-three million, one hundred fifty-five thousand, three hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 181 362 905 1163 1810 1991 2326 3982 5815 9955 11630 12793 19910 25586 63965 127930 210503 421006 1052515 2105030 2315533 4631066 11577665 23155330