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23280349 = 315031493
BaseRepresentation
bin101100011001…
…1101011011101
31121210202122011
41120303223131
521424432344
62150551221
7401610511
oct130635335
947722564
1023280349
1112160964
127968511
134a91571
143140141
15209cd34
hex1633add

23280349 has 8 divisors (see below), whose sum is σ = 24095232. Its totient is φ = 22469520.

The previous prime is 23280331. The next prime is 23280371. The reversal of 23280349 is 94308232.

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 23280349 - 25 = 23280317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23280349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23280379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14847 + ... + 16339.

It is an arithmetic number, because the mean of its divisors is an integer number (3011904).

Almost surely, 223280349 is an apocalyptic number.

It is an amenable number.

23280349 is a deficient number, since it is larger than the sum of its proper divisors (814883).

23280349 is a wasteful number, since it uses less digits than its factorization.

23280349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 23280349 is about 4824.9713988790. The cubic root of 23280349 is about 285.5375062036.

The spelling of 23280349 in words is "twenty-three million, two hundred eighty thousand, three hundred forty-nine".

Divisors: 1 31 503 1493 15593 46283 750979 23280349