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30841642 = 2131186217
BaseRepresentation
bin111010110100…
…1101100101010
32011000220210001
41311221230222
530343413032
63021013214
7523102216
oct165515452
964026701
1030841642
1116455867
12a3b420a
13650b0c0
14414b946
152a933e7
hex1d69b2a

30841642 has 8 divisors (see below), whose sum is σ = 49821156. Its totient is φ = 14234592.

The previous prime is 30841639. The next prime is 30841651. The reversal of 30841642 is 24614803.

It can be written as a sum of positive squares in 2 ways, for example, as 30151081 + 690561 = 5491^2 + 831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30841642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593083 + ... + 593134.

Almost surely, 230841642 is an apocalyptic number.

30841642 is a deficient number, since it is larger than the sum of its proper divisors (18979514).

30841642 is a wasteful number, since it uses less digits than its factorization.

30841642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186232.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 30841642 is about 5553.5251867620. The cubic root of 30841642 is about 313.6022456303.

The spelling of 30841642 in words is "thirty million, eight hundred forty-one thousand, six hundred forty-two".

Divisors: 1 2 13 26 1186217 2372434 15420821 30841642