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28418123748 = 2237338310997
BaseRepresentation
bin11010011101110110…
…100010011111100100
32201100111201021002210
4122131312202133210
5431200014424443
621015523003420
72024141031510
oct323566423744
981314637083
1028418123748
1111063320a93
125611209570
1328ab736751
141538311140
15b14d09c33
hex69dda27e4

28418123748 has 24 divisors (see below), whose sum is σ = 75781663552. Its totient is φ = 8119463904.

The previous prime is 28418123719. The next prime is 28418123879. The reversal of 28418123748 is 84732181482.

It is a junction number, because it is equal to n+sod(n) for n = 28418123697 and 28418123706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169155415 + ... + 169155582.

Almost surely, 228418123748 is an apocalyptic number.

28418123748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28418123748 is an abundant number, since it is smaller than the sum of its proper divisors (47363539804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28418123748 is a wasteful number, since it uses less digits than its factorization.

28418123748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338311011 (or 338311009 counting only the distinct ones).

The product of its digits is 688128, while the sum is 48.

The spelling of 28418123748 in words is "twenty-eight billion, four hundred eighteen million, one hundred twenty-three thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 338310997 676621994 1014932991 1353243988 2029865982 2368176979 4059731964 4736353958 7104530937 9472707916 14209061874 28418123748