Search a number
-
+
30740814 = 23213131371
BaseRepresentation
bin111010101000…
…1000101001110
32010211210110200
41311101011032
530332201224
63014514330
7522202236
oct165210516
963753420
1030740814
1116397035
12a3659a6
1364a4240
144122cc6
152a735c9
hex1d5114e

30740814 has 24 divisors (see below), whose sum is σ = 71729112. Its totient is φ = 9458640.

The previous prime is 30740813. The next prime is 30740819. The reversal of 30740814 is 41804703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30740813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65452 + ... + 65919.

It is an arithmetic number, because the mean of its divisors is an integer number (2988713).

Almost surely, 230740814 is an apocalyptic number.

30740814 is an abundant number, since it is smaller than the sum of its proper divisors (40988298).

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

30740814 is a wasteful number, since it uses less digits than its factorization.

30740814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131392 (or 131389 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 30740814 is about 5544.4399176112. The cubic root of 30740814 is about 313.2601280115.

The spelling of 30740814 in words is "thirty million, seven hundred forty thousand, eight hundred fourteen".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 131371 262742 394113 788226 1182339 1707823 2364678 3415646 5123469 10246938 15370407 30740814