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23401045 = 513813389
BaseRepresentation
bin101100101000…
…1001001010101
31122000220012101
41121101021111
521442313140
62153322101
7402622423
oct131211125
948026171
1023401045
1112233608
127a06331
134b04495
143172113
1520c399a
hex1651255

23401045 has 8 divisors (see below), whose sum is σ = 28109880. Its totient is φ = 18701760.

The previous prime is 23401019. The next prime is 23401093. The reversal of 23401045 is 54010432.

It can be written as a sum of positive squares in 4 ways, for example, as 7584516 + 15816529 = 2754^2 + 3977^2 .

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

It is not a de Polignac number, because 23401045 - 25 = 23401013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5211 + ... + 8599.

It is an arithmetic number, because the mean of its divisors is an integer number (3513735).

Almost surely, 223401045 is an apocalyptic number.

It is an amenable number.

23401045 is a deficient number, since it is larger than the sum of its proper divisors (4708835).

23401045 is a wasteful number, since it uses less digits than its factorization.

23401045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 23401045 is about 4837.4626613546. The cubic root of 23401045 is about 286.0301083272.

Adding to 23401045 its reverse (54010432), we get a palindrome (77411477).

The spelling of 23401045 in words is "twenty-three million, four hundred one thousand, forty-five".

Divisors: 1 5 1381 3389 6905 16945 4680209 23401045