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1340378088 = 23377978441
BaseRepresentation
bin100111111100100…
…1000101111101000
310110102011021001220
41033321020233220
510221114044323
6341000542040
745134011560
oct11771105750
93412137056
101340378088
11628676995
12314a81920
1318490493a
14ca031da0
157ca190e3
hex4fe48be8

1340378088 has 32 divisors (see below), whose sum is σ = 3829652160. Its totient is φ = 382965120.

The previous prime is 1340378087. The next prime is 1340378119. The reversal of 1340378088 is 8808730431.

It is a super-2 number, since 2×13403780882 = 3593226837581071488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1340378087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3989053 + ... + 3989388.

It is an arithmetic number, because the mean of its divisors is an integer number (119676630).

Almost surely, 21340378088 is an apocalyptic number.

It is an amenable number.

1340378088 is an abundant number, since it is smaller than the sum of its proper divisors (2489274072).

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

1340378088 is a wasteful number, since it uses less digits than its factorization.

1340378088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978457 (or 7978453 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1340378088 is about 36611.1743597498. The cubic root of 1340378088 is about 1102.5774512770.

The spelling of 1340378088 in words is "one billion, three hundred forty million, three hundred seventy-eight thousand, eighty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 7978441 15956882 23935323 31913764 47870646 55849087 63827528 95741292 111698174 167547261 191482584 223396348 335094522 446792696 670189044 1340378088