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30906492 = 22315831627
BaseRepresentation
bin111010111100…
…1100001111100
32011011012201220
41311321201330
530403001432
63022233340
7523462251
oct165714174
964135656
1030906492
111649a561
12a425850
136531786
144167428
152aa772c
hex1d7987c

30906492 has 24 divisors (see below), whose sum is σ = 72205056. Its totient is φ = 10289328.

The previous prime is 30906487. The next prime is 30906541. The reversal of 30906492 is 29460903.

It is a super-2 number, since 2×309064922 = 1910422495492128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18183 + ... + 19809.

It is an arithmetic number, because the mean of its divisors is an integer number (3008544).

Almost surely, 230906492 is an apocalyptic number.

It is an amenable number.

30906492 is an abundant number, since it is smaller than the sum of its proper divisors (41298564).

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

30906492 is a wasteful number, since it uses less digits than its factorization.

30906492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217 (or 3215 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 30906492 is about 5559.3607546192. The cubic root of 30906492 is about 313.8218931244.

The spelling of 30906492 in words is "thirty million, nine hundred six thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 1583 1627 3166 3254 4749 4881 6332 6508 9498 9762 18996 19524 2575541 5151082 7726623 10302164 15453246 30906492