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20380337070 = 2351394887371
BaseRepresentation
bin10010111110110000…
…110100001110101110
31221121100012101121220
4102332300310032232
5313214331241240
613210153204210
71321021002222
oct227660641656
957540171556
1020380337070
118709194985
123b49400666
131bca423362
14db4a0c782
157e43485d0
hex4bec343ae

20380337070 has 32 divisors (see below), whose sum is σ = 49264709760. Its totient is φ = 5395656480.

The previous prime is 20380337063. The next prime is 20380337083. The reversal of 20380337070 is 7073308302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2439516 + ... + 2447855.

It is an arithmetic number, because the mean of its divisors is an integer number (1539522180).

Almost surely, 220380337070 is an apocalyptic number.

20380337070 is an abundant number, since it is smaller than the sum of its proper divisors (28884372690).

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

20380337070 is a wasteful number, since it uses less digits than its factorization.

20380337070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4887520.

The product of its (nonzero) digits is 21168, while the sum is 33.

The spelling of 20380337070 in words is "twenty billion, three hundred eighty million, three hundred thirty-seven thousand, seventy".

Divisors: 1 2 3 5 6 10 15 30 139 278 417 695 834 1390 2085 4170 4887371 9774742 14662113 24436855 29324226 48873710 73310565 146621130 679344569 1358689138 2038033707 3396722845 4076067414 6793445690 10190168535 20380337070