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64198430 = 256419843
BaseRepresentation
bin1111010011100…
…1011100011110
311110210121200122
43310321130132
5112413322210
610211554542
71406451302
oct364713436
9143717618
1064198430
113326925a
12195bba52
13103b9c4a
148751d02
155981b55
hex3d3971e

64198430 has 8 divisors (see below), whose sum is σ = 115557192. Its totient is φ = 25679368.

The previous prime is 64198417. The next prime is 64198447. The reversal of 64198430 is 3489146.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3209912 + ... + 3209931.

It is an arithmetic number, because the mean of its divisors is an integer number (14444649).

Almost surely, 264198430 is an apocalyptic number.

64198430 is a deficient number, since it is larger than the sum of its proper divisors (51358762).

64198430 is a wasteful number, since it uses less digits than its factorization.

64198430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6419850.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 64198430 is about 8012.3922769670. The cubic root of 64198430 is about 400.4129693274.

The spelling of 64198430 in words is "sixty-four million, one hundred ninety-eight thousand, four hundred thirty".

Divisors: 1 2 5 10 6419843 12839686 32099215 64198430