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378650053 = 1372939433
BaseRepresentation
bin10110100100011…
…011110111000101
3222101111102020001
4112210123313011
51233413300203
6101323441301
712245321005
oct2644336705
9871442201
10378650053
11184813431
12a6986231
13605a78b2
1438408005
152339791d
hex1691bdc5

378650053 has 8 divisors (see below), whose sum is σ = 382756248. Its totient is φ = 374563584.

The previous prime is 378650033. The next prime is 378650093. The reversal of 378650053 is 350056873.

It can be written as a sum of positive squares in 4 ways, for example, as 199572129 + 179077924 = 14127^2 + 13382^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 378650053 - 221 = 376552901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378649994 and 378650021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378650003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35425 + ... + 44857.

It is an arithmetic number, because the mean of its divisors is an integer number (47844531).

Almost surely, 2378650053 is an apocalyptic number.

It is an amenable number.

378650053 is a deficient number, since it is larger than the sum of its proper divisors (4106195).

378650053 is a wasteful number, since it uses less digits than its factorization.

378650053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9863.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 378650053 is about 19458.9324732885. The cubic root of 378650053 is about 723.4569181312.

The spelling of 378650053 in words is "three hundred seventy-eight million, six hundred fifty thousand, fifty-three".

Divisors: 1 137 293 9433 40141 1292321 2763869 378650053