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13961028 = 22310111519
BaseRepresentation
bin110101010000…
…011101000100
3222021021221010
4311100131010
512033223103
61215122220
7226444464
oct65203504
928237833
1013961028
117976144
124813370
132b7a783
141bd5ba4
15135b903
hexd50744

13961028 has 24 divisors (see below), whose sum is σ = 32901120. Its totient is φ = 4607200.

The previous prime is 13960987. The next prime is 13961071. The reversal of 13961028 is 82016931.

It is a junction number, because it is equal to n+sod(n) for n = 13960986 and 13961004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4548 + ... + 6971.

It is an arithmetic number, because the mean of its divisors is an integer number (1370880).

Almost surely, 213961028 is an apocalyptic number.

It is an amenable number.

13961028 is an abundant number, since it is smaller than the sum of its proper divisors (18940092).

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

13961028 is a wasteful number, since it uses less digits than its factorization.

13961028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11627 (or 11625 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 13961028 is about 3736.4459048674. The cubic root of 13961028 is about 240.7903803326.

Adding to 13961028 its reverse (82016931), we get a palindrome (95977959).

The spelling of 13961028 in words is "thirteen million, nine hundred sixty-one thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 101 202 303 404 606 1212 11519 23038 34557 46076 69114 138228 1163419 2326838 3490257 4653676 6980514 13961028