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1392329540 = 22579945211
BaseRepresentation
bin101001011111101…
…0100001101000100
310121000220200001202
41102333110031010
510322414021130
6350054242032
746334414540
oct12277241504
93530820052
101392329540
11654a2a878
1232a356318
131925c4344
14d2cb6a20
158237c145
hex52fd4344

1392329540 has 24 divisors (see below), whose sum is σ = 3341591232. Its totient is φ = 477370080.

The previous prime is 1392329531. The next prime is 1392329579. The reversal of 1392329540 is 459232931.

It is a happy number.

It is a super-2 number, since 2×13923295402 = 3877163095913223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1392329494 and 1392329503.

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, 4972466 + ... + 4972745.

It is an arithmetic number, because the mean of its divisors is an integer number (139232968).

Almost surely, 21392329540 is an apocalyptic number.

1392329540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392329540 is an abundant number, since it is smaller than the sum of its proper divisors (1949261692).

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

1392329540 is a wasteful number, since it uses less digits than its factorization.

1392329540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9945227 (or 9945225 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 1392329540 is about 37313.9322505683. The cubic root of 1392329540 is about 1116.6421378241.

The spelling of 1392329540 in words is "one billion, three hundred ninety-two million, three hundred twenty-nine thousand, five hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 9945211 19890422 39780844 49726055 69616477 99452110 139232954 198904220 278465908 348082385 696164770 1392329540