Search a number
-
+
3049981 = 111791549
BaseRepresentation
bin1011101000100111111101
312201221210021
423220213331
51240044411
6145212141
734632034
oct13504775
95657707
103049981
1117a3550
121031051
1382a32c
1459571b
15403a71
hex2e89fd

3049981 has 8 divisors (see below), whose sum is σ = 3348000. Its totient is φ = 2755440.

The previous prime is 3049973. The next prime is 3049993. The reversal of 3049981 is 1899403.

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 3049981 - 23 = 3049973 is a prime.

It is a super-2 number, since 2×30499812 = 18604768200722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3049931) 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, 1195 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (418500).

Almost surely, 23049981 is an apocalyptic number.

It is an amenable number.

3049981 is a deficient number, since it is larger than the sum of its proper divisors (298019).

3049981 is a wasteful number, since it uses less digits than its factorization.

3049981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 3049981 is about 1746.4194799647. The cubic root of 3049981 is about 145.0214950298.

The spelling of 3049981 in words is "three million, forty-nine thousand, nine hundred eighty-one".

Divisors: 1 11 179 1549 1969 17039 277271 3049981