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13213130 = 257316089
BaseRepresentation
bin110010011001…
…110111001010
3220212022000012
4302121313022
511340310010
61151111522
7220211150
oct62316712
926768005
1013213130
117505247
1245125a2
132978228
141a7d3d0
151260005
hexc99dca

13213130 has 32 divisors (see below), whose sum is σ = 28062720. Its totient is φ = 4383360.

The previous prime is 13213129. The next prime is 13213139. The reversal of 13213130 is 3131231.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13213139) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 875 + ... + 5214.

It is an arithmetic number, because the mean of its divisors is an integer number (876960).

Almost surely, 213213130 is an apocalyptic number.

13213130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13213130 is an abundant number, since it is smaller than the sum of its proper divisors (14849590).

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

13213130 is a wasteful number, since it uses less digits than its factorization.

13213130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6134.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 13213130 is about 3634.9869325762. The cubic root of 13213130 is about 236.4114840825.

Adding to 13213130 its reverse (3131231), we get a palindrome (16344361).

The spelling of 13213130 in words is "thirteen million, two hundred thirteen thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 31 35 62 70 155 217 310 434 1085 2170 6089 12178 30445 42623 60890 85246 188759 213115 377518 426230 943795 1321313 1887590 2642626 6606565 13213130