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30802041 = 325216569
BaseRepresentation
bin111010110000…
…0000001111001
32010221220110100
41311200001321
530341131131
63020110013
7522545604
oct165400171
963856410
1030802041
1116429036
12a395309
1364c607a
14413b33b
152a867e6
hex1d60079

30802041 has 12 divisors (see below), whose sum is σ = 44584020. Its totient is φ = 20492160.

The previous prime is 30802027. The next prime is 30802043. The reversal of 30802041 is 14020803.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19105641 + 11696400 = 4371^2 + 3420^2 .

It is not a de Polignac number, because 30802041 - 221 = 28704889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30802043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1405 + ... + 7973.

It is an arithmetic number, because the mean of its divisors is an integer number (3715335).

Almost surely, 230802041 is an apocalyptic number.

It is an amenable number.

30802041 is a deficient number, since it is larger than the sum of its proper divisors (13781979).

30802041 is a wasteful number, since it uses less digits than its factorization.

30802041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7096 (or 7093 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 30802041 is about 5549.9586484946. The cubic root of 30802041 is about 313.4679652561.

Adding to 30802041 its reverse (14020803), we get a palindrome (44822844).

The spelling of 30802041 in words is "thirty million, eight hundred two thousand, forty-one".

Divisors: 1 3 9 521 1563 4689 6569 19707 59121 3422449 10267347 30802041