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23764045 = 517279577
BaseRepresentation
bin101101010100…
…1110001001101
31122201100010211
41122221301031
522040422140
62205202421
7405663634
oct132516115
948640124
1023764045
1112461308
127b60411
134c00786
14322851b
1521462ea
hex16a9c4d

23764045 has 8 divisors (see below), whose sum is σ = 30194424. Its totient is φ = 17892864.

The previous prime is 23764043. The next prime is 23764049. The reversal of 23764045 is 54046732.

It can be written as a sum of positive squares in 4 ways, for example, as 2253001 + 21511044 = 1501^2 + 4638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23764045 - 21 = 23764043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23763998 and 23764016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23764043) 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 7 ways as a sum of consecutive naturals, for example, 139704 + ... + 139873.

It is an arithmetic number, because the mean of its divisors is an integer number (3774303).

Almost surely, 223764045 is an apocalyptic number.

It is an amenable number.

23764045 is a deficient number, since it is larger than the sum of its proper divisors (6430379).

23764045 is a wasteful number, since it uses less digits than its factorization.

23764045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279599.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 23764045 is about 4874.8379460245. The cubic root of 23764045 is about 287.5015047180.

The spelling of 23764045 in words is "twenty-three million, seven hundred sixty-four thousand, forty-five".

Divisors: 1 5 17 85 279577 1397885 4752809 23764045