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23149306 = 212791139
BaseRepresentation
bin101100001001…
…1101011111010
31121120002212201
41120103223322
521411234211
62144100414
7400523455
oct130235372
947502781
1023149306
1112081464
12790470a
134a46a1b
14310849c
1520740c1
hex1613afa

23149306 has 8 divisors (see below), whose sum is σ = 34997760. Its totient is φ = 11483388.

The previous prime is 23149289. The next prime is 23149307. The reversal of 23149306 is 60394132.

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

It is not an unprimeable number, because it can be changed into a prime (23149307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45316 + ... + 45823.

It is an arithmetic number, because the mean of its divisors is an integer number (4374720).

Almost surely, 223149306 is an apocalyptic number.

23149306 is a deficient number, since it is larger than the sum of its proper divisors (11848454).

23149306 is a wasteful number, since it uses less digits than its factorization.

23149306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91268.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 23149306 is about 4811.3725692364. The cubic root of 23149306 is about 285.0007427907. Note that the first 3 decimals are identical.

The spelling of 23149306 in words is "twenty-three million, one hundred forty-nine thousand, three hundred six".

Divisors: 1 2 127 254 91139 182278 11574653 23149306