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65238995 = 5411572027
BaseRepresentation
bin1111100011011…
…1011111010011
311112202111002002
43320313133103
5113200121440
610250144215
71421344103
oct370673723
9145674062
1065238995
113390a028
1219a2206b
1310692773
148943203
155ada115
hex3e377d3

65238995 has 16 divisors (see below), whose sum is σ = 80746848. Its totient is φ = 50568960.

The previous prime is 65238983. The next prime is 65238997. The reversal of 65238995 is 59983256.

It is a de Polignac number, because none of the positive numbers 2k-65238995 is a prime.

It is a super-2 number, since 2×652389952 = 8512252937220050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65238997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31172 + ... + 33198.

It is an arithmetic number, because the mean of its divisors is an integer number (5046678).

Almost surely, 265238995 is an apocalyptic number.

65238995 is a deficient number, since it is larger than the sum of its proper divisors (15507853).

65238995 is a wasteful number, since it uses less digits than its factorization.

65238995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230.

The product of its digits is 583200, while the sum is 47.

The square root of 65238995 is about 8077.0659895781. The cubic root of 65238995 is about 402.5647594578.

The spelling of 65238995 in words is "sixty-five million, two hundred thirty-eight thousand, nine hundred ninety-five".

Divisors: 1 5 41 157 205 785 2027 6437 10135 32185 83107 318239 415535 1591195 13047799 65238995