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34938881 = 293533413
BaseRepresentation
bin1000010101001…
…0000000000001
32102202002010122
42011102000001
532421021011
63244510025
7602655425
oct205220001
972662118
1034938881
11187a410a
12b84b315
137313cc3
1448d6b85
1531023db
hex2152001

34938881 has 8 divisors (see below), whose sum is σ = 36256680. Its totient is φ = 33628672.

The previous prime is 34938877. The next prime is 34938889. The reversal of 34938881 is 18883943.

It can be written as a sum of positive squares in 4 ways, for example, as 12138256 + 22800625 = 3484^2 + 4775^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 34938881 - 22 = 34938877 is a prime.

It is a super-2 number, since 2×349388812 = 2441450811064322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34938889) 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, 8531 + ... + 11943.

It is an arithmetic number, because the mean of its divisors is an integer number (4532085).

It is a Proth number, since it is equal to 4265 ⋅ 213 + 1 and 4265 < 213.

Almost surely, 234938881 is an apocalyptic number.

34938881 is the 3413-rd octagonal number.

It is an amenable number.

34938881 is a deficient number, since it is larger than the sum of its proper divisors (1317799).

34938881 is a wasteful number, since it uses less digits than its factorization.

34938881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795.

The product of its digits is 165888, while the sum is 44.

The square root of 34938881 is about 5910.9120277670. The cubic root of 34938881 is about 326.9161159827.

The spelling of 34938881 in words is "thirty-four million, nine hundred thirty-eight thousand, eight hundred eighty-one".

Divisors: 1 29 353 3413 10237 98977 1204789 34938881