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64263830 = 256426383
BaseRepresentation
bin1111010100100…
…1011010010110
311110220221101212
43311021122112
5112422420310
610213221422
71410143051
oct365113226
9143827355
1064263830
1133303404
1219631872
1310410947
14876ba98
155996205
hex3d49696

64263830 has 8 divisors (see below), whose sum is σ = 115674912. Its totient is φ = 25705528.

The previous prime is 64263827. The next prime is 64263839. The reversal of 64263830 is 3836246.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64263839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3213182 + ... + 3213201.

It is an arithmetic number, because the mean of its divisors is an integer number (14459364).

Almost surely, 264263830 is an apocalyptic number.

64263830 is a deficient number, since it is larger than the sum of its proper divisors (51411082).

64263830 is a wasteful number, since it uses less digits than its factorization.

64263830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426390.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64263830 is about 8016.4724162190. The cubic root of 64263830 is about 400.5488922820.

The spelling of 64263830 in words is "sixty-four million, two hundred sixty-three thousand, eight hundred thirty".

Divisors: 1 2 5 10 6426383 12852766 32131915 64263830