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30538053 = 357131381
BaseRepresentation
bin111010001111…
…1100101000101
32010110111100000
41310133211011
530304204203
63010311513
7520366140
oct164374505
963414300
1030538053
1116268767
12a288599
136432b70
1440ad057
152a334a3
hex1d1f945

30538053 has 48 divisors (see below), whose sum is σ = 56341376. Its totient is φ = 16096320.

The previous prime is 30538049. The next prime is 30538063. The reversal of 30538053 is 35083503.

It is not a de Polignac number, because 30538053 - 22 = 30538049 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30538033) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21423 + ... + 22803.

Almost surely, 230538053 is an apocalyptic number.

It is an amenable number.

30538053 is a deficient number, since it is larger than the sum of its proper divisors (25803323).

30538053 is a wasteful number, since it uses less digits than its factorization.

30538053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 30538053 is about 5526.1245914293. The cubic root of 30538053 is about 312.5698719495.

The spelling of 30538053 in words is "thirty million, five hundred thirty-eight thousand, fifty-three".

Divisors: 1 3 7 9 13 21 27 39 63 81 91 117 189 243 273 351 567 819 1053 1381 1701 2457 3159 4143 7371 9667 12429 17953 22113 29001 37287 53859 87003 111861 125671 161577 261009 335583 377013 484731 783027 1131039 1454193 2349081 3393117 4362579 10179351 30538053