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13900386 = 2310132287
BaseRepresentation
bin110101000001…
…101001100010
3222011012202010
4311001221202
512024303021
61213533350
7226102623
oct65015142
928135663
1013900386
117934625
1247a4256
132b58ca6
141bbba4a
151348976
hexd41a62

13900386 has 16 divisors (see below), whose sum is σ = 27840384. Its totient is φ = 4626864.

The previous prime is 13900379. The next prime is 13900387. The reversal of 13900386 is 68300931.

It is not an unprimeable number, because it can be changed into a prime (13900387) 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, 4935 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (1740024).

Almost surely, 213900386 is an apocalyptic number.

13900386 is an abundant number, since it is smaller than the sum of its proper divisors (13939998).

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

13900386 is a wasteful number, since it uses less digits than its factorization.

13900386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13900386 is about 3728.3221427339. The cubic root of 13900386 is about 240.4412369056.

The spelling of 13900386 in words is "thirteen million, nine hundred thousand, three hundred eighty-six".

Divisors: 1 2 3 6 1013 2026 2287 3039 4574 6078 6861 13722 2316731 4633462 6950193 13900386