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30825682 = 215412841
BaseRepresentation
bin111010110010…
…1110011010010
32011000002212221
41311211303102
530342410212
63020411254
7523004536
oct165456322
964002787
1030825682
1116444878
12a3a6b2a
136503a64
144145bc6
152a8d807
hex1d65cd2

30825682 has 4 divisors (see below), whose sum is σ = 46238526. Its totient is φ = 15412840.

The previous prime is 30825677. The next prime is 30825689. The reversal of 30825682 is 28652803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28652803 = 171685459.

It can be written as a sum of positive squares in only one way, i.e., 30680521 + 145161 = 5539^2 + 381^2 .

It is not an unprimeable number, because it can be changed into a prime (30825689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7706419 + ... + 7706422.

Almost surely, 230825682 is an apocalyptic number.

30825682 is a deficient number, since it is larger than the sum of its proper divisors (15412844).

30825682 is a wasteful number, since it uses less digits than its factorization.

30825682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15412843.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 30825682 is about 5552.0880756703. The cubic root of 30825682 is about 313.5481417725.

The spelling of 30825682 in words is "thirty million, eight hundred twenty-five thousand, six hundred eighty-two".

Divisors: 1 2 15412841 30825682