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378630753 = 3126210251
BaseRepresentation
bin10110100100010…
…111001001100001
3222101110102202020
4112210113021201
51233412141003
6101323212053
712245210514
oct2644271141
9871412666
10378630753
111847aa986
12a6977029
136059bb87
1438400d7b
1523391d53
hex16917261

378630753 has 4 divisors (see below), whose sum is σ = 504841008. Its totient is φ = 252420500.

The previous prime is 378630743. The next prime is 378630767. The reversal of 378630753 is 357036873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-378630753 is a prime.

It is a super-3 number, since 3×3786307533 (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378630743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63105123 + ... + 63105128.

It is an arithmetic number, because the mean of its divisors is an integer number (126210252).

Almost surely, 2378630753 is an apocalyptic number.

It is an amenable number.

378630753 is a deficient number, since it is larger than the sum of its proper divisors (126210255).

378630753 is a wasteful number, since it uses less digits than its factorization.

378630753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126210254.

The product of its (nonzero) digits is 317520, while the sum is 42.

The square root of 378630753 is about 19458.4365507612. The cubic root of 378630753 is about 723.4446262576. Note that the first 3 decimals are identical.

The spelling of 378630753 in words is "three hundred seventy-eight million, six hundred thirty thousand, seven hundred fifty-three".

Divisors: 1 3 126210251 378630753