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1390563680 = 25511790093
BaseRepresentation
bin101001011100010…
…0101000101100000
310120220120221202112
41102320211011200
510321441014210
6345552334452
746313411342
oct12270450540
93526527675
101390563680
11653a34090
12329844428
1319212665c
14d2977292
158212dd05
hex52e25160

1390563680 has 48 divisors (see below), whose sum is σ = 3583866384. Its totient is φ = 505658880.

The previous prime is 1390563677. The next prime is 1390563721. The reversal of 1390563680 is 863650931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393287 + ... + 396806.

It is an arithmetic number, because the mean of its divisors is an integer number (74663883).

Almost surely, 21390563680 is an apocalyptic number.

1390563680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1390563680 is an abundant number, since it is smaller than the sum of its proper divisors (2193302704).

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

1390563680 is a wasteful number, since it uses less digits than its factorization.

1390563680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790119 (or 790111 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 1390563680 is about 37290.2625359490. The cubic root of 1390563680 is about 1116.1698674726.

The spelling of 1390563680 in words is "one billion, three hundred ninety million, five hundred sixty-three thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 160 176 220 352 440 880 1760 790093 1580186 3160372 3950465 6320744 7900930 8691023 12641488 15801860 17382046 25282976 31603720 34764092 43455115 63207440 69528184 86910230 126414880 139056368 173820460 278112736 347640920 695281840 1390563680