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18428027932 = 2219993230431
BaseRepresentation
bin10001001010011001…
…010110010000011100
31202120021120210222001
4101022121112100130
5300220033343212
612244332332044
71221443436646
oct211231262034
952507523861
1018428027932
1178a7161156
1236a3614024
131978b06352
14c6b609896
1572cc56657
hex44a65641c

18428027932 has 12 divisors (see below), whose sum is σ = 32250801856. Its totient is φ = 9213513120.

The previous prime is 18428027923. The next prime is 18428027941. The reversal of 18428027932 is 23972082481.

It is an interprime number because it is at equal distance from previous prime (18428027923) and next prime (18428027941).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35244 + ... + 195187.

Almost surely, 218428027932 is an apocalyptic number.

It is an amenable number.

18428027932 is a deficient number, since it is larger than the sum of its proper divisors (13822773924).

18428027932 is a wasteful number, since it uses less digits than its factorization.

18428027932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250428 (or 250426 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

It can be divided in two parts, 184280 and 27932, that added together give a palindrome (212212).

The spelling of 18428027932 in words is "eighteen billion, four hundred twenty-eight million, twenty-seven thousand, nine hundred thirty-two".

Divisors: 1 2 4 19993 39986 79972 230431 460862 921724 4607006983 9214013966 18428027932