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64250378 = 2171889717
BaseRepresentation
bin1111010100011…
…0001000001010
311110220020221122
43311012020022
5112422003003
610213035242
71410055613
oct365061012
9143806848
1064250378
11332a4295
1219625b22
131040779a
148766c0a
155992238
hex3d4620a

64250378 has 8 divisors (see below), whose sum is σ = 102044772. Its totient is φ = 30235456.

The previous prime is 64250371. The next prime is 64250401. The reversal of 64250378 is 87305246.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56505289 + 7745089 = 7517^2 + 2783^2 .

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

It is a super-2 number, since 2×642503782 = 8256222146285768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64250371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944825 + ... + 944892.

Almost surely, 264250378 is an apocalyptic number.

64250378 is a deficient number, since it is larger than the sum of its proper divisors (37794394).

64250378 is a wasteful number, since it uses less digits than its factorization.

64250378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889736.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 64250378 is about 8015.6333498982. The cubic root of 64250378 is about 400.5209420872.

The spelling of 64250378 in words is "sixty-four million, two hundred fifty thousand, three hundred seventy-eight".

Divisors: 1 2 17 34 1889717 3779434 32125189 64250378