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13952970 = 2325229677
BaseRepresentation
bin110101001110…
…011111001010
3222020212212200
4311032133022
512032443340
61215021030
7226412133
oct65163712
928225780
1013952970
117970089
12480a776
132b76bc5
141bd2c8a
151359330
hexd4e7ca

13952970 has 48 divisors (see below), whose sum is σ = 36489960. Its totient is φ = 3699072.

The previous prime is 13952947. The next prime is 13952999. The reversal of 13952970 is 7925931.

It can be written as a sum of positive squares in 4 ways, for example, as 13638249 + 314721 = 3693^2 + 561^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20272 + ... + 20948.

Almost surely, 213952970 is an apocalyptic number.

13952970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13952970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18244980).

13952970 is an abundant number, since it is smaller than the sum of its proper divisors (22536990).

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

13952970 is a wasteful number, since it uses less digits than its factorization.

13952970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 13952970 is about 3735.3674518044. The cubic root of 13952970 is about 240.7440451033.

The spelling of 13952970 in words is "thirteen million, nine hundred fifty-two thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 229 458 677 687 1145 1354 1374 2031 2061 2290 3385 3435 4062 4122 6093 6770 6870 10155 10305 12186 20310 20610 30465 60930 155033 310066 465099 775165 930198 1395297 1550330 2325495 2790594 4650990 6976485 13952970