Search a number
-
+
23012899 = 73132397
BaseRepresentation
bin101011111001…
…0011000100011
31121022011202121
41113302120203
521342403044
62141125111
7366415000
oct127623043
947264677
1023012899
1111a98a28
127859797
1349c9900
1430b08a7
152048984
hex15f2623

23012899 has 24 divisors (see below), whose sum is σ = 29133600. Its totient is φ = 18162144.

The previous prime is 23012879. The next prime is 23012909. The reversal of 23012899 is 99821032.

It is not a de Polignac number, because 23012899 - 25 = 23012867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23012809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57769 + ... + 58165.

It is an arithmetic number, because the mean of its divisors is an integer number (1213900).

Almost surely, 223012899 is an apocalyptic number.

23012899 is a deficient number, since it is larger than the sum of its proper divisors (6120701).

23012899 is an equidigital number, since it uses as much as digits as its factorization.

23012899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 23012899 is about 4797.1761485274. The cubic root of 23012899 is about 284.4398518760.

It can be divided in two parts, 2301289 and 9, that multiplied together give a square (20711601 = 45512).

The spelling of 23012899 in words is "twenty-three million, twelve thousand, eight hundred ninety-nine".

Divisors: 1 7 13 49 91 169 343 397 637 1183 2779 4459 5161 8281 19453 36127 57967 67093 136171 252889 469651 1770223 3287557 23012899