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20127378 = 235956857
BaseRepresentation
bin100110011000…
…1111010010010
31101212120120110
41030301322102
520123034003
61555222150
7333036255
oct114617222
941776513
1020127378
11103a7aa7
1268a7956
1342293bb
14295d09c
151b78a03
hex1331e92

20127378 has 16 divisors (see below), whose sum is σ = 40937760. Its totient is φ = 6595296.

The previous prime is 20127361. The next prime is 20127407. The reversal of 20127378 is 87372102.

It is a super-2 number, since 2×201273782 = 810222690309768, which contains 22 as substring.

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, 28075 + ... + 28782.

It is an arithmetic number, because the mean of its divisors is an integer number (2558610).

Almost surely, 220127378 is an apocalyptic number.

20127378 is an abundant number, since it is smaller than the sum of its proper divisors (20810382).

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

20127378 is a wasteful number, since it uses less digits than its factorization.

20127378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56921.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 20127378 is about 4486.3546449205. The cubic root of 20127378 is about 272.0168043972.

The spelling of 20127378 in words is "twenty million, one hundred twenty-seven thousand, three hundred seventy-eight".

Divisors: 1 2 3 6 59 118 177 354 56857 113714 170571 341142 3354563 6709126 10063689 20127378