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1390139264 = 2764116943
BaseRepresentation
bin101001011011011…
…1101011110000000
310120212210101120102
41102312331132000
510321333424024
6345535301532
746306663103
oct12266753600
93525711512
101390139264
11653774228
1232967a8a8
13192008417
14d28a673a
15820981ae
hex52dbd780

1390139264 has 32 divisors (see below), whose sum is σ = 2773902240. Its totient is φ = 693944320.

The previous prime is 1390139227. The next prime is 1390139281. The reversal of 1390139264 is 4629310931.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73577 + ... + 90519.

It is an arithmetic number, because the mean of its divisors is an integer number (86684445).

Almost surely, 21390139264 is an apocalyptic number.

It is an amenable number.

1390139264 is a deficient number, since it is larger than the sum of its proper divisors (1383762976).

1390139264 is an equidigital number, since it uses as much as digits as its factorization.

1390139264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17598 (or 17586 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 1390139264 is about 37284.5713935403. The cubic root of 1390139264 is about 1116.0562999650.

The spelling of 1390139264 in words is "one billion, three hundred ninety million, one hundred thirty-nine thousand, two hundred sixty-four".

Divisors: 1 2 4 8 16 32 64 128 641 1282 2564 5128 10256 16943 20512 33886 41024 67772 82048 135544 271088 542176 1084352 2168704 10860463 21720926 43441852 86883704 173767408 347534816 695069632 1390139264