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30538004 = 2271935651
BaseRepresentation
bin111010001111…
…1100100010100
32010110111021012
41310133210110
530304204004
63010311352
7520366040
oct164374424
963414235
1030538004
1116268722
12a288558
136432b33
1440ad020
152a3346e
hex1d1f914

30538004 has 24 divisors (see below), whose sum is σ = 61403328. Its totient is φ = 13017600.

The previous prime is 30537979. The next prime is 30538009. The reversal of 30538004 is 40083503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30538009) 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 7 ways as a sum of consecutive naturals, for example, 2579 + ... + 8229.

It is an arithmetic number, because the mean of its divisors is an integer number (2558472).

Almost surely, 230538004 is an apocalyptic number.

It is an amenable number.

30538004 is an abundant number, since it is smaller than the sum of its proper divisors (30865324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30538004 is a wasteful number, since it uses less digits than its factorization.

30538004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855 (or 5853 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30538004 is about 5526.1201579408. The cubic root of 30538004 is about 312.5697047708.

The spelling of 30538004 in words is "thirty million, five hundred thirty-eight thousand, four".

Divisors: 1 2 4 7 14 28 193 386 772 1351 2702 5404 5651 11302 22604 39557 79114 158228 1090643 2181286 4362572 7634501 15269002 30538004