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30472325 = 521393761
BaseRepresentation
bin111010000111…
…1100010000101
32010100011011122
41310033202011
530300103300
63005043325
7520003412
oct164174205
963304148
1030472325
1116223344
12a256545
13640bc80
144093109
152a1dc85
hex1d0f885

30472325 has 12 divisors (see below), whose sum is σ = 40692708. Its totient is φ = 22502400.

The previous prime is 30472319. The next prime is 30472327. The reversal of 30472325 is 52327403.

It can be written as a sum of positive squares in 6 ways, for example, as 9523396 + 20948929 = 3086^2 + 4577^2 .

It is not a de Polignac number, because 30472325 - 214 = 30455941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30472294 and 30472303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30472327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46556 + ... + 47205.

It is an arithmetic number, because the mean of its divisors is an integer number (3391059).

Almost surely, 230472325 is an apocalyptic number.

It is an amenable number.

30472325 is a deficient number, since it is larger than the sum of its proper divisors (10220383).

30472325 is a wasteful number, since it uses less digits than its factorization.

30472325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93784 (or 93779 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 30472325 is about 5520.1743631882. The cubic root of 30472325 is about 312.3454595878.

Adding to 30472325 its reverse (52327403), we get a palindrome (82799728).

The spelling of 30472325 in words is "thirty million, four hundred seventy-two thousand, three hundred twenty-five".

Divisors: 1 5 13 25 65 325 93761 468805 1218893 2344025 6094465 30472325