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30885246 = 233781707
BaseRepresentation
bin111010111010…
…0010101111110
32011010010121000
41311310111332
530401311441
63021551130
7523343310
oct165642576
964103530
1030885246
11164855a7
12a4154a6
136524bc2
14415d7b0
152aa12b6
hex1d7457e

30885246 has 32 divisors (see below), whose sum is σ = 78439680. Its totient is φ = 8824248.

The previous prime is 30885233. The next prime is 30885247. The reversal of 30885246 is 64258803.

It is a self number, because there is not a number n which added to its sum of digits gives 30885246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30885247) 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, 40476 + ... + 41231.

It is an arithmetic number, because the mean of its divisors is an integer number (2451240).

Almost surely, 230885246 is an apocalyptic number.

30885246 is an abundant number, since it is smaller than the sum of its proper divisors (47554434).

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

30885246 is a wasteful number, since it uses less digits than its factorization.

30885246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81725 (or 81719 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 30885246 is about 5557.4495949131. The cubic root of 30885246 is about 313.7499666143.

The spelling of 30885246 in words is "thirty million, eight hundred eighty-five thousand, two hundred forty-six".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 126 189 378 81707 163414 245121 490242 571949 735363 1143898 1470726 1715847 2206089 3431694 4412178 5147541 10295082 15442623 30885246