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308940 = 223519271
BaseRepresentation
bin1001011011011001100
3120200210020
41023123030
534341230
610342140
72424462
oct1133314
9520706
10308940
111a1125
1212a950
13aa808
1480832
1561810
hex4b6cc

308940 has 48 divisors (see below), whose sum is σ = 913920. Its totient is φ = 77760.

The previous prime is 308939. The next prime is 308951. The reversal of 308940 is 49803.

308940 = 32 + 42 + ... + 972.

It is a self number, because there is not a number n which added to its sum of digits gives 308940.

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, 1005 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (19040).

2308940 is an apocalyptic number.

308940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456960).

308940 is an abundant number, since it is smaller than the sum of its proper divisors (604980).

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

308940 is a wasteful number, since it uses less digits than its factorization.

308940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 308940 is about 555.8237130602. The cubic root of 308940 is about 67.6017669321.

The spelling of 308940 in words is "three hundred eight thousand, nine hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 271 285 380 542 570 813 1084 1140 1355 1626 2710 3252 4065 5149 5420 8130 10298 15447 16260 20596 25745 30894 51490 61788 77235 102980 154470 308940