Search a number
-
+
30508074 = 23223591249
BaseRepresentation
bin111010001100…
…0010000101010
32010101222012200
41310120100222
530302224244
63005521030
7520212552
oct164302052
963358180
1030508074
1116248193
12a273176
13642231c
1440a2162
152a29669
hex1d1842a

30508074 has 48 divisors (see below), whose sum is σ = 70200000. Its totient is φ = 9554688.

The previous prime is 30508057. The next prime is 30508099. The reversal of 30508074 is 47080503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23802 + ... + 25050.

It is an arithmetic number, because the mean of its divisors is an integer number (1462500).

Almost surely, 230508074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30508074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35100000).

30508074 is an abundant number, since it is smaller than the sum of its proper divisors (39691926).

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

30508074 is a wasteful number, since it uses less digits than its factorization.

30508074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 30508074 is about 5523.4114458367. The cubic root of 30508074 is about 312.4675558851.

Adding to 30508074 its reverse (47080503), we get a palindrome (77588577).

The spelling of 30508074 in words is "thirty million, five hundred eight thousand, seventy-four".

Divisors: 1 2 3 6 9 18 23 46 59 69 118 138 177 207 354 414 531 1062 1249 1357 2498 2714 3747 4071 7494 8142 11241 12213 22482 24426 28727 57454 73691 86181 147382 172362 221073 258543 442146 517086 663219 1326438 1694893 3389786 5084679 10169358 15254037 30508074