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23801930 = 252718783
BaseRepresentation
bin101101011001…
…1000001001010
31122210021002222
41122303001022
522043130210
62210054042
7406212245
oct132630112
948707088
1023801930
1112487819
127b7a322
134c14aa9
14323825c
152152655
hex16b304a

23801930 has 16 divisors (see below), whose sum is σ = 43006464. Its totient is φ = 9484560.

The previous prime is 23801923. The next prime is 23801933. The reversal of 23801930 is 3910832.

It is a self number, because there is not a number n which added to its sum of digits gives 23801930.

It is not an unprimeable number, because it can be changed into a prime (23801933) by changing a digit.

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, 1682 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (2687904).

Almost surely, 223801930 is an apocalyptic number.

23801930 is a deficient number, since it is larger than the sum of its proper divisors (19204534).

23801930 is a wasteful number, since it uses less digits than its factorization.

23801930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9061.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 23801930 is about 4878.7221687651. The cubic root of 23801930 is about 287.6542033511.

The spelling of 23801930 in words is "twenty-three million, eight hundred one thousand, nine hundred thirty".

Divisors: 1 2 5 10 271 542 1355 2710 8783 17566 43915 87830 2380193 4760386 11900965 23801930