Search a number
-
+
10169780 = 225508489
BaseRepresentation
bin100110110010…
…110110110100
3201010200022112
4212302312310
510100413110
61001550152
7152304335
oct46626664
921120275
1010169780
115816785
1234a5358
132150c2a
1414ca28c
15d5d405
hex9b2db4

10169780 has 12 divisors (see below), whose sum is σ = 21356580. Its totient is φ = 4067904.

The previous prime is 10169773. The next prime is 10169821. The reversal of 10169780 is 8796101.

It can be written as a sum of positive squares in 2 ways, for example, as 7086244 + 3083536 = 2662^2 + 1756^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 254225 + ... + 254264.

It is an arithmetic number, because the mean of its divisors is an integer number (1779715).

Almost surely, 210169780 is an apocalyptic number.

10169780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10169780 is an abundant number, since it is smaller than the sum of its proper divisors (11186800).

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

10169780 is a wasteful number, since it uses less digits than its factorization.

10169780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508498 (or 508496 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 10169780 is about 3189.0092505353. The cubic root of 10169780 is about 216.6558995307.

The spelling of 10169780 in words is "ten million, one hundred sixty-nine thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 508489 1016978 2033956 2542445 5084890 10169780