Search a number
-
+
1030928180 = 22551546409
BaseRepresentation
bin111101011100101…
…011011100110100
32122211212120121012
4331130223130310
54102404200210
6250144211352
734355513342
oct7534533464
92584776535
101030928180
11489a28667
12249309b58
13135778799
149acbc992
1560790305
hex3d72b734

1030928180 has 12 divisors (see below), whose sum is σ = 2164949220. Its totient is φ = 412371264.

The previous prime is 1030928179. The next prime is 1030928183. The reversal of 1030928180 is 818290301.

It can be written as a sum of positive squares in 2 ways, for example, as 109077136 + 921851044 = 10444^2 + 30362^2 .

It is a super-2 number, since 2×10309281802 = 2125625824636224800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030928183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25773185 + ... + 25773224.

It is an arithmetic number, because the mean of its divisors is an integer number (180412435).

Almost surely, 21030928180 is an apocalyptic number.

1030928180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1030928180 is an abundant number, since it is smaller than the sum of its proper divisors (1134021040).

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

1030928180 is a wasteful number, since it uses less digits than its factorization.

1030928180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51546418 (or 51546416 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1030928180 is about 32108.0703250756. The cubic root of 1030928180 is about 1010.2048991213.

The spelling of 1030928180 in words is "one billion, thirty million, nine hundred twenty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 51546409 103092818 206185636 257732045 515464090 1030928180