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64024445 = 528145569
BaseRepresentation
bin1111010000111…
…0111101111101
311110110210000202
43310032331331
5112342240240
610204133245
71405125122
oct364167575
9143423022
1064024445
113315a571
1219537225
13103589b4
148708749
15594a315
hex3d0ef7d

64024445 has 8 divisors (see below), whose sum is σ = 77104440. Its totient is φ = 51036160.

The previous prime is 64024427. The next prime is 64024447. The reversal of 64024445 is 54442046.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25745476 + 38278969 = 5074^2 + 6187^2 .

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

It is not a de Polignac number, because 64024445 - 28 = 64024189 is a prime.

It is a super-3 number, since 3×640244453 (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64024447) 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, 21380 + ... + 24189.

It is an arithmetic number, because the mean of its divisors is an integer number (9638055).

Almost surely, 264024445 is an apocalyptic number.

It is an amenable number.

64024445 is a deficient number, since it is larger than the sum of its proper divisors (13079995).

64024445 is a wasteful number, since it uses less digits than its factorization.

64024445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45855.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 64024445 is about 8001.5276666397. The cubic root of 64024445 is about 400.0509206008.

The spelling of 64024445 in words is "sixty-four million, twenty-four thousand, four hundred forty-five".

Divisors: 1 5 281 1405 45569 227845 12804889 64024445