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30885412 = 22192317669
BaseRepresentation
bin111010111010…
…0011000100100
32011010010211011
41311310120210
530401313122
63021552004
7523343635
oct165643044
964103734
1030885412
1116485738
12a415604
136524cbc
14415d88c
152aa1377
hex1d74624

30885412 has 24 divisors (see below), whose sum is σ = 59371200. Its totient is φ = 13993056.

The previous prime is 30885391. The next prime is 30885419. The reversal of 30885412 is 21458803.

It is not an unprimeable number, because it can be changed into a prime (30885419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7087 + ... + 10582.

It is an arithmetic number, because the mean of its divisors is an integer number (2473800).

Almost surely, 230885412 is an apocalyptic number.

It is an amenable number.

30885412 is a deficient number, since it is larger than the sum of its proper divisors (28485788).

30885412 is a wasteful number, since it uses less digits than its factorization.

30885412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17715 (or 17713 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 30885412 is about 5557.4645298013. The cubic root of 30885412 is about 313.7505287209.

The spelling of 30885412 in words is "thirty million, eight hundred eighty-five thousand, four hundred twelve".

Divisors: 1 2 4 19 23 38 46 76 92 437 874 1748 17669 35338 70676 335711 406387 671422 812774 1342844 1625548 7721353 15442706 30885412