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19080036 = 223458889
BaseRepresentation
bin100100011001…
…0001101100100
31022220100220000
41020302031210
514341030121
61520541300
7321114633
oct110621544
938810800
1019080036
11a852128
126481830
133c50781
14276951a
151a1d526
hex1232364

19080036 has 30 divisors (see below), whose sum is σ = 49879830. Its totient is φ = 6359904.

The previous prime is 19079993. The next prime is 19080077. The reversal of 19080036 is 63008091.

It can be written as a sum of positive squares in only one way, i.e., 14017536 + 5062500 = 3744^2 + 2250^2 .

It is a super-2 number, since 2×190800362 = 728095547522592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 19079991 and 19080009.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 29121 + ... + 29768.

It is an arithmetic number, because the mean of its divisors is an integer number (1662661).

Almost surely, 219080036 is an apocalyptic number.

It is an amenable number.

19080036 is an abundant number, since it is smaller than the sum of its proper divisors (30799794).

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

19080036 is a wasteful number, since it uses less digits than its factorization.

19080036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58905 (or 58894 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 19080036 is about 4368.0700543833. The cubic root of 19080036 is about 267.2143210379.

The spelling of 19080036 in words is "nineteen million, eighty thousand, thirty-six".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 58889 117778 176667 235556 353334 530001 706668 1060002 1590003 2120004 3180006 4770009 6360012 9540018 19080036