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13238630 = 251969677
BaseRepresentation
bin110010100000…
…000101100110
3220220120222122
4302200011212
511342114010
61151425542
7220345406
oct62400546
926816878
1013238630
117522419
1245252b2
132986a12
141a88806
151267855
hexca0166

13238630 has 16 divisors (see below), whose sum is σ = 25084080. Its totient is φ = 5016672.

The previous prime is 13238627. The next prime is 13238633. The reversal of 13238630 is 3683231.

It is an interprime number because it is at equal distance from previous prime (13238627) and next prime (13238633).

It is a super-2 number, since 2×132386302 = 350522648553800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13238630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13238633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34649 + ... + 35028.

It is an arithmetic number, because the mean of its divisors is an integer number (1567755).

Almost surely, 213238630 is an apocalyptic number.

13238630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13238630 is a deficient number, since it is larger than the sum of its proper divisors (11845450).

13238630 is a wasteful number, since it uses less digits than its factorization.

13238630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69703.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 13238630 is about 3638.4928198363. The cubic root of 13238630 is about 236.5634697429.

The spelling of 13238630 in words is "thirteen million, two hundred thirty-eight thousand, six hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 69677 139354 348385 696770 1323863 2647726 6619315 13238630