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30952040 = 2357110543
BaseRepresentation
bin111011000010…
…0101001101000
32011020112012212
41312010221220
530410431130
63023224252
7524042120
oct166045150
964215185
1030952040
11165207a9
12a448088
136549422
144179c80
152ab5e95
hex1d84a68

30952040 has 32 divisors (see below), whose sum is σ = 79591680. Its totient is φ = 10612032.

The previous prime is 30952039. The next prime is 30952063. The reversal of 30952040 is 4025903.

It is a junction number, because it is equal to n+sod(n) for n = 30951997 and 30952015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54992 + ... + 55551.

It is an arithmetic number, because the mean of its divisors is an integer number (2487240).

Almost surely, 230952040 is an apocalyptic number.

It is an amenable number.

30952040 is an abundant number, since it is smaller than the sum of its proper divisors (48639640).

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

30952040 is a wasteful number, since it uses less digits than its factorization.

30952040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110561 (or 110557 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30952040 is about 5563.4557605862. The cubic root of 30952040 is about 313.9759809612.

Adding to 30952040 its reverse (4025903), we get a palindrome (34977943).

The spelling of 30952040 in words is "thirty million, nine hundred fifty-two thousand, forty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 110543 221086 442172 552715 773801 884344 1105430 1547602 2210860 3095204 3869005 4421720 6190408 7738010 15476020 30952040