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3268981 = 17316203
BaseRepresentation
bin1100011110000101110101
320011002012101
430132011311
51314101411
6154022101
736533362
oct14360565
96132171
103268981
111933041
121117931
138a5c11
14611469
154488c1
hex31e175

3268981 has 8 divisors (see below), whose sum is σ = 3573504. Its totient is φ = 2976960.

The previous prime is 3268963. The next prime is 3269009. The reversal of 3268981 is 1898623.

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 3268981 - 211 = 3266933 is a prime.

It is a super-2 number, since 2×32689812 = 21372473556722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3268981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3268901) 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, 2575 + ... + 3628.

It is an arithmetic number, because the mean of its divisors is an integer number (446688).

Almost surely, 23268981 is an apocalyptic number.

3268981 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3268981 is the 1144-th centered pentagonal number.

It is an amenable number.

3268981 is a deficient number, since it is larger than the sum of its proper divisors (304523).

3268981 is a wasteful number, since it uses less digits than its factorization.

3268981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251.

The product of its digits is 20736, while the sum is 37.

The square root of 3268981 is about 1808.0323559052. The cubic root of 3268981 is about 148.4126086646.

The spelling of 3268981 in words is "three million, two hundred sixty-eight thousand, nine hundred eighty-one".

Divisors: 1 17 31 527 6203 105451 192293 3268981