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30442175 = 521217687
BaseRepresentation
bin111010000100…
…0001010111111
32010021121210222
41310020022333
530243122200
63004251555
7516516461
oct164101277
963247728
1030442175
1116202725
12a240bbb
1363cb32a
144086131
152a14d85
hex1d082bf

30442175 has 6 divisors (see below), whose sum is σ = 37748328. Its totient is φ = 24353720.

The previous prime is 30442129. The next prime is 30442177. The reversal of 30442175 is 57124403.

It is not a de Polignac number, because 30442175 - 216 = 30376639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30442177) 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 5 ways as a sum of consecutive naturals, for example, 608819 + ... + 608868.

It is an arithmetic number, because the mean of its divisors is an integer number (6291388).

Almost surely, 230442175 is an apocalyptic number.

30442175 is a deficient number, since it is larger than the sum of its proper divisors (7306153).

30442175 is a wasteful number, since it uses less digits than its factorization.

30442175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217697 (or 1217692 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 30442175 is about 5517.4427953537. The cubic root of 30442175 is about 312.2424117328.

Adding to 30442175 its reverse (57124403), we get a palindrome (87566578).

The spelling of 30442175 in words is "thirty million, four hundred forty-two thousand, one hundred seventy-five".

Divisors: 1 5 25 1217687 6088435 30442175