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1213030 = 257133143
BaseRepresentation
bin100101000001001100110
32021121222001
410220021212
5302304110
641555514
713211350
oct4501146
92247861
101213030
11759405
124a5b9a
13336190
142380d0
1518e63a
hex128266

1213030 has 64 divisors (see below), whose sum is σ = 2838528. Its totient is φ = 362880.

The previous prime is 1213027. The next prime is 1213033. The reversal of 1213030 is 303121.

1213030 is nontrivially palindromic in base 6.

It is an interprime number because it is at equal distance from previous prime (1213027) and next prime (1213033).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1212998 and 1213016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28189 + ... + 28231.

It is an arithmetic number, because the mean of its divisors is an integer number (44352).

21213030 is an apocalyptic number.

1213030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213030 is an abundant number, since it is smaller than the sum of its proper divisors (1625498).

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

1213030 is a wasteful number, since it uses less digits than its factorization.

1213030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1213030 is about 1101.3764115869. The cubic root of 1213030 is about 106.6490964984.

Adding to 1213030 its reverse (303121), we get a palindrome (1516151).

Subtracting from 1213030 its reverse (303121), we obtain a palindrome (909909).

The spelling of 1213030 in words is "one million, two hundred thirteen thousand, thirty".

Divisors: 1 2 5 7 10 13 14 26 31 35 43 62 65 70 86 91 130 155 182 215 217 301 310 403 430 434 455 559 602 806 910 1085 1118 1333 1505 2015 2170 2666 2795 2821 3010 3913 4030 5590 5642 6665 7826 9331 13330 14105 17329 18662 19565 28210 34658 39130 46655 86645 93310 121303 173290 242606 606515 1213030