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104020881 = 3231818329
BaseRepresentation
bin1100011001100…
…11101110010001
321020201210211020
412030303232101
5203112132011
614153310053
72402106606
oct614635621
9236653736
10104020881
1153798478
122aa05329
1318720a23
14db5a6ad
1591eb006
hex6333b91

104020881 has 16 divisors (see below), whose sum is σ = 145541760. Its totient is φ = 65957760.

The previous prime is 104020879. The next prime is 104020897. The reversal of 104020881 is 188020401.

It is not a de Polignac number, because 104020881 - 21 = 104020879 is a prime.

It is a super-2 number, since 2×1040208812 = 21640687368032322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (104020871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8325 + ... + 16653.

It is an arithmetic number, because the mean of its divisors is an integer number (9096360).

Almost surely, 2104020881 is an apocalyptic number.

It is an amenable number.

104020881 is a deficient number, since it is larger than the sum of its proper divisors (41520879).

104020881 is a wasteful number, since it uses less digits than its factorization.

104020881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 104020881 is about 10199.0627510571. The cubic root of 104020881 is about 470.2984086557.

The spelling of 104020881 in words is "one hundred four million, twenty thousand, eight hundred eighty-one".

Divisors: 1 3 23 69 181 543 4163 8329 12489 24987 191567 574701 1507549 4522647 34673627 104020881