Search a number
-
+
30293874 = 23213129461
BaseRepresentation
bin111001110001…
…1111101110010
32010000002101100
41303203331302
530223400444
63001145230
7515331222
oct163437562
963002340
1030293874
1116111266
12a18b216
136378990
144048082
1529d5e69
hex1ce3f72

30293874 has 24 divisors (see below), whose sum is σ = 70686252. Its totient is φ = 9321120.

The previous prime is 30293869. The next prime is 30293891. The reversal of 30293874 is 47839203.

It can be written as a sum of positive squares in 2 ways, for example, as 25431849 + 4862025 = 5043^2 + 2205^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64497 + ... + 64964.

Almost surely, 230293874 is an apocalyptic number.

30293874 is an abundant number, since it is smaller than the sum of its proper divisors (40392378).

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

30293874 is a wasteful number, since it uses less digits than its factorization.

30293874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129482 (or 129479 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 30293874 is about 5503.9871002756. The cubic root of 30293874 is about 311.7345498596.

It can be divided in two parts, 3029 and 3874, that added together give a triangular number (6903 = T117).

The spelling of 30293874 in words is "thirty million, two hundred ninety-three thousand, eight hundred seventy-four".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 129461 258922 388383 776766 1165149 1682993 2330298 3365986 5048979 10097958 15146937 30293874