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30025404 = 223492671
BaseRepresentation
bin111001010001…
…0011010111100
32002111110010000
41302202122330
530141303104
62551314300
7513132423
oct162423274
962443100
1030025404
1115a48592
12a07b990
1362b3716
143db82ba
152981639
hex1ca26bc

30025404 has 30 divisors (see below), whose sum is σ = 78493184. Its totient is φ = 10008360.

The previous prime is 30025399. The next prime is 30025409. The reversal of 30025404 is 40452003.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30025399) and next prime (30025409).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30025409) 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 9 ways as a sum of consecutive naturals, for example, 46012 + ... + 46659.

Almost surely, 230025404 is an apocalyptic number.

It is an amenable number.

30025404 is an abundant number, since it is smaller than the sum of its proper divisors (48467780).

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

30025404 is a wasteful number, since it uses less digits than its factorization.

30025404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92687 (or 92676 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 30025404 is about 5479.5441416235. The cubic root of 30025404 is about 310.8109326665.

Adding to 30025404 its reverse (40452003), we get a palindrome (70477407).

The spelling of 30025404 in words is "thirty million, twenty-five thousand, four hundred four".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 92671 185342 278013 370684 556026 834039 1112052 1668078 2502117 3336156 5004234 7506351 10008468 15012702 30025404