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102054020 = 22515433307
BaseRepresentation
bin1100001010100…
…11100010000100
321010000212210112
412011103202010
5202111212040
614043212152
72346305405
oct605234204
9233025715
10102054020
1152674772
122a217058
13181b26c3
14d7a79ac
158e5d365
hex6153884

102054020 has 24 divisors (see below), whose sum is σ = 214517184. Its totient is φ = 40782816.

The previous prime is 102054019. The next prime is 102054023. The reversal of 102054020 is 20450201.

It is a junction number, because it is equal to n+sod(n) for n = 102053986 and 102054004.

It is not an unprimeable number, because it can be changed into a prime (102054023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29207 + ... + 32513.

It is an arithmetic number, because the mean of its divisors is an integer number (8938216).

Almost surely, 2102054020 is an apocalyptic number.

102054020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102054020 is an abundant number, since it is smaller than the sum of its proper divisors (112463164).

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

102054020 is a wasteful number, since it uses less digits than its factorization.

102054020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859 (or 4857 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 102054020 is about 10102.1789728751. The cubic root of 102054020 is about 467.3153416765.

The spelling of 102054020 in words is "one hundred two million, fifty-four thousand, twenty".

Divisors: 1 2 4 5 10 20 1543 3086 3307 6172 6614 7715 13228 15430 16535 30860 33070 66140 5102701 10205402 20410804 25513505 51027010 102054020