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30682542 = 23113971171
BaseRepresentation
bin111010100001…
…0110110101110
32010201211112110
41311002312232
530323320132
63013344450
7521540322
oct165026656
963654473
1030682542
1116357280
12a338126
136483867
144109982
152a611cc
hex1d42dae

30682542 has 32 divisors (see below), whose sum is σ = 67169664. Its totient is φ = 9266400.

The previous prime is 30682507. The next prime is 30682543. The reversal of 30682542 is 24528603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30682543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25617 + ... + 26787.

It is an arithmetic number, because the mean of its divisors is an integer number (2099052).

Almost surely, 230682542 is an apocalyptic number.

30682542 is an abundant number, since it is smaller than the sum of its proper divisors (36487122).

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

30682542 is a wasteful number, since it uses less digits than its factorization.

30682542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 30682542 is about 5539.1824306480. The cubic root of 30682542 is about 313.0620651521.

The spelling of 30682542 in words is "thirty million, six hundred eighty-two thousand, five hundred forty-two".

Divisors: 1 2 3 6 11 22 33 66 397 794 1171 1191 2342 2382 3513 4367 7026 8734 12881 13101 25762 26202 38643 77286 464887 929774 1394661 2789322 5113757 10227514 15341271 30682542