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13900030 = 251390003
BaseRepresentation
bin110101000001…
…100011111110
3222011012020221
4311001203332
512024300110
61213531554
7226101604
oct65014376
928135227
1013900030
117934331
1247a3bba
132b58a91
141bbb874
1513487da
hexd418fe

13900030 has 8 divisors (see below), whose sum is σ = 25020072. Its totient is φ = 5560008.

The previous prime is 13900013. The next prime is 13900043. The reversal of 13900030 is 3000931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13899977 and 13900013.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 694992 + ... + 695011.

It is an arithmetic number, because the mean of its divisors is an integer number (3127509).

Almost surely, 213900030 is an apocalyptic number.

13900030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13900030 is a deficient number, since it is larger than the sum of its proper divisors (11120042).

13900030 is a wasteful number, since it uses less digits than its factorization.

13900030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390010.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 13900030 is about 3728.2743997726. The cubic root of 13900030 is about 240.4391842573.

Adding to 13900030 its reverse (3000931), we get a palindrome (16900961).

The spelling of 13900030 in words is "thirteen million, nine hundred thousand, thirty".

Divisors: 1 2 5 10 1390003 2780006 6950015 13900030