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50290660 = 225737331
BaseRepresentation
bin1011111111010…
…1111111100100
310111122000211001
42333311333210
5100333300120
64553523044
71150315000
oct277657744
9114560731
1050290660
112642a132
1214a13484
13a55a7b4
146971700
154635e0a
hex2ff5fe4

50290660 has 48 divisors (see below), whose sum is σ = 123177600. Its totient is φ = 17240160.

The previous prime is 50290651. The next prime is 50290661. The reversal of 50290660 is 6609205.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (50290661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3195 + ... + 10525.

It is an arithmetic number, because the mean of its divisors is an integer number (2566200).

Almost surely, 250290660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50290660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61588800).

50290660 is an abundant number, since it is smaller than the sum of its proper divisors (72886940).

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

50290660 is a wasteful number, since it uses less digits than its factorization.

50290660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7361 (or 7345 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 50290660 is about 7091.5907947371. The cubic root of 50290660 is about 369.1156380938.

Adding to 50290660 its reverse (6609205), we get a palindrome (56899865).

The spelling of 50290660 in words is "fifty million, two hundred ninety thousand, six hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 343 490 686 980 1372 1715 3430 6860 7331 14662 29324 36655 51317 73310 102634 146620 205268 256585 359219 513170 718438 1026340 1436876 1796095 2514533 3592190 5029066 7184380 10058132 12572665 25145330 50290660