Search a number
-
+
1220310030 = 23559276863
BaseRepresentation
bin100100010111100…
…0111010000001110
310011001020011122210
41020233013100032
54444344410110
6321031251250
742145315122
oct11057072016
93131204583
101220310030
11576918a95
122a0819b26
13165a85a54
14b80d9582
15721ed520
hex48bc740e

1220310030 has 32 divisors (see below), whose sum is σ = 2929665024. Its totient is φ = 325313696.

The previous prime is 1220310023. The next prime is 1220310037. The reversal of 1220310030 is 300130221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220310023) and next prime (1220310037).

It is a super-3 number, since 3×12203100303 (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220309988 and 1220310015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220310037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174379 + ... + 181241.

It is an arithmetic number, because the mean of its divisors is an integer number (91552032).

Almost surely, 21220310030 is an apocalyptic number.

1220310030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220310030 is an abundant number, since it is smaller than the sum of its proper divisors (1709354994).

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

1220310030 is a wasteful number, since it uses less digits than its factorization.

1220310030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12800.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1220310030 is about 34932.9361777678. The cubic root of 1220310030 is about 1068.6202351255.

Adding to 1220310030 its reverse (300130221), we get a palindrome (1520440251).

The spelling of 1220310030 in words is "one billion, two hundred twenty million, three hundred ten thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 5927 6863 11854 13726 17781 20589 29635 34315 35562 41178 59270 68630 88905 102945 177810 205890 40677001 81354002 122031003 203385005 244062006 406770010 610155015 1220310030