Search a number
-
+
30696668 = 2243178469
BaseRepresentation
bin111010100011…
…0010011011100
32010202112220122
41311012103130
530324243133
63013534112
7521626442
oct165062334
963675818
1030696668
1116366952
12a344338
13648a112
144110b92
152a65498
hex1d464dc

30696668 has 12 divisors (see below), whose sum is σ = 54968760. Its totient is φ = 14991312.

The previous prime is 30696667. The next prime is 30696671. The reversal of 30696668 is 86669603.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30696667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89063 + ... + 89406.

It is an arithmetic number, because the mean of its divisors is an integer number (4580730).

Almost surely, 230696668 is an apocalyptic number.

It is an amenable number.

30696668 is a deficient number, since it is larger than the sum of its proper divisors (24272092).

30696668 is a wasteful number, since it uses less digits than its factorization.

30696668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178516 (or 178514 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 30696668 is about 5540.4573818413. The cubic root of 30696668 is about 313.1101015484.

The spelling of 30696668 in words is "thirty million, six hundred ninety-six thousand, six hundred sixty-eight".

Divisors: 1 2 4 43 86 172 178469 356938 713876 7674167 15348334 30696668