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10172020 = 2251393659
BaseRepresentation
bin100110110011…
…011001110100
3201010210101111
4212303121310
510101001040
61002004404
7152314015
oct46633164
921123344
1010172020
115818431
1234a6704
132151c61
1414cb00c
15d5ddea
hex9b3674

10172020 has 24 divisors (see below), whose sum is σ = 21520800. Its totient is φ = 4038432.

The previous prime is 10172017. The next prime is 10172021. The reversal of 10172020 is 2027101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10172021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951 + ... + 4609.

It is an arithmetic number, because the mean of its divisors is an integer number (896700).

Almost surely, 210172020 is an apocalyptic number.

10172020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10172020 is an abundant number, since it is smaller than the sum of its proper divisors (11348780).

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

10172020 is a wasteful number, since it uses less digits than its factorization.

10172020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807 (or 3805 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 10172020 is about 3189.3604374545. The cubic root of 10172020 is about 216.6718052693.

Adding to 10172020 its reverse (2027101), we get a palindrome (12199121).

The spelling of 10172020 in words is "ten million, one hundred seventy-two thousand, twenty".

Divisors: 1 2 4 5 10 20 139 278 556 695 1390 2780 3659 7318 14636 18295 36590 73180 508601 1017202 2034404 2543005 5086010 10172020