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488100649 = 220932
BaseRepresentation
bin11101000101111…
…101001100101001
31021000110002012211
4131011331030221
51444423210044
6120233405121
715044533651
oct3505751451
91230402184
10488100649
1123057a273
121175697a1
137a179b6a
1448b79361
152ccb7634
hex1d17d329

488100649 has 3 divisors (see below), whose sum is σ = 488122743. Its totient is φ = 488078556.

The previous prime is 488100577. The next prime is 488100659. The reversal of 488100649 is 946001884.

The square root of 488100649 is 22093.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 446265625 + 41835024 = 21125^2 + 6468^2 .

It is not a de Polignac number, because 488100649 - 211 = 488098601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (488100659) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11047 + ... + 33139.

It is an arithmetic number, because the mean of its divisors is an integer number (162707581).

Almost surely, 2488100649 is an apocalyptic number.

488100649 is the 22093-rd square number.

488100649 is the 11047-th centered octagonal number.

It is an amenable number.

488100649 is a deficient number, since it is larger than the sum of its proper divisors (22094).

488100649 is an frugal number, since it uses more digits than its factorization.

488100649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44186 (or 22093 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The cubic root of 488100649 is about 787.3535591982.

The spelling of 488100649 in words is "four hundred eighty-eight million, one hundred thousand, six hundred forty-nine".

Divisors: 1 22093 488100649