Search a number
-
+
23330988 = 22324713789
BaseRepresentation
bin101100100000…
…0000010101100
31121220100002200
41121000002230
521433042423
62152021500
7402211242
oct131000254
947810080
1023330988
1112195a0a
127991890
134aab625
143154792
1520acd43
hex16400ac

23330988 has 36 divisors (see below), whose sum is σ = 60234720. Its totient is φ = 7610976.

The previous prime is 23330981. The next prime is 23331001. The reversal of 23330988 is 88903332.

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

It is a super-2 number, since 2×233309882 = 1088670002112288, which contains 22 as substring.

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 (23330981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5203 + ... + 8586.

Almost surely, 223330988 is an apocalyptic number.

It is an amenable number.

23330988 is an abundant number, since it is smaller than the sum of its proper divisors (36903732).

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

23330988 is a wasteful number, since it uses less digits than its factorization.

23330988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13846 (or 13841 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 23330988 is about 4830.2161442321. The cubic root of 23330988 is about 285.7443883045.

The spelling of 23330988 in words is "twenty-three million, three hundred thirty thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 47 94 141 188 282 423 564 846 1692 13789 27578 41367 55156 82734 124101 165468 248202 496404 648083 1296166 1944249 2592332 3888498 5832747 7776996 11665494 23330988