Search a number
-
+
3388981 = 23147347
BaseRepresentation
bin1100111011011000110101
320101011210211
430323120311
51331421411
6200345421
740543261
oct14733065
96334724
103388981
111a05212
121175271
1391871b
146430a1
1546e221
hex33b635

3388981 has 4 divisors (see below), whose sum is σ = 3536352. Its totient is φ = 3241612.

The previous prime is 3388963. The next prime is 3388993. The reversal of 3388981 is 1898833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3388981 - 25 = 3388949 is a prime.

It is a super-2 number, since 2×33889812 = 22970384436722, 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 (3388921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73651 + ... + 73696.

It is an arithmetic number, because the mean of its divisors is an integer number (884088).

Almost surely, 23388981 is an apocalyptic number.

It is an amenable number.

3388981 is a deficient number, since it is larger than the sum of its proper divisors (147371).

3388981 is a wasteful number, since it uses less digits than its factorization.

3388981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147370.

The product of its digits is 41472, while the sum is 40.

The square root of 3388981 is about 1840.9185207390. The cubic root of 3388981 is about 150.2068405747.

The spelling of 3388981 in words is "three million, three hundred eighty-eight thousand, nine hundred eighty-one".

Divisors: 1 23 147347 3388981