Search a number
-
+
3143980 = 2257171321
BaseRepresentation
bin1011111111100100101100
312220201201201
423333210230
51301101410
6151215244
735503060
oct13774454
95821651
103143980
111858134
121077524
13861058
145bbaa0
1542183a
hex2ff92c

3143980 has 48 divisors (see below), whose sum is σ = 7995456. Its totient is φ = 1013760.

The previous prime is 3143969. The next prime is 3143993. The reversal of 3143980 is 893413.

It is a super-2 number, since 2×31439802 = 19769220480800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 1720 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (166572).

Almost surely, 23143980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3143980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3997728).

3143980 is an abundant number, since it is smaller than the sum of its proper divisors (4851476).

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

3143980 is a wasteful number, since it uses less digits than its factorization.

3143980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 3143980 is about 1773.1271809997. The cubic root of 3143980 is about 146.4962782546.

The spelling of 3143980 in words is "three million, one hundred forty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 17 20 28 34 35 68 70 85 119 140 170 238 340 476 595 1190 1321 2380 2642 5284 6605 9247 13210 18494 22457 26420 36988 44914 46235 89828 92470 112285 157199 184940 224570 314398 449140 628796 785995 1571990 3143980