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30680340 = 22352232293
BaseRepresentation
bin111010100001…
…0010100010100
32010201201111220
41311002110110
530323232330
63013330340
7521531025
oct165022424
963651456
1030680340
1116355659
12a3369b0
136482862
144108c4c
152a60710
hex1d42514

30680340 has 48 divisors (see below), whose sum is σ = 86327808. Its totient is φ = 8141184.

The previous prime is 30680333. The next prime is 30680357. The reversal of 30680340 is 4308603.

It is a self number, because there is not a number n which added to its sum of digits gives 30680340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12234 + ... + 14526.

It is an arithmetic number, because the mean of its divisors is an integer number (1798496).

Almost surely, 230680340 is an apocalyptic number.

30680340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30680340 is an abundant number, since it is smaller than the sum of its proper divisors (55647468).

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

30680340 is a wasteful number, since it uses less digits than its factorization.

30680340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2526 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30680340 is about 5538.9836612866. The cubic root of 30680340 is about 313.0545757774.

Adding to 30680340 its reverse (4308603), we get a palindrome (34988943).

The spelling of 30680340 in words is "thirty million, six hundred eighty thousand, three hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 223 446 669 892 1115 1338 2230 2293 2676 3345 4460 4586 6690 6879 9172 11465 13380 13758 22930 27516 34395 45860 68790 137580 511339 1022678 1534017 2045356 2556695 3068034 5113390 6136068 7670085 10226780 15340170 30680340