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20070293 = 43466751
BaseRepresentation
bin100110010001…
…1111110010101
31101202200021012
41030203332111
520114222133
61554102005
7332410655
oct114437625
941680235
1020070293
1110369121
12687a905
134209419
142946365
151b66b48
hex1323f95

20070293 has 4 divisors (see below), whose sum is σ = 20537088. Its totient is φ = 19603500.

The previous prime is 20070257. The next prime is 20070307. The reversal of 20070293 is 39207002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20070293 - 26 = 20070229 is a prime.

It is a super-2 number, since 2×200702932 = 805633322211698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20073293) 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, 233333 + ... + 233418.

It is an arithmetic number, because the mean of its divisors is an integer number (5134272).

Almost surely, 220070293 is an apocalyptic number.

It is an amenable number.

20070293 is a deficient number, since it is larger than the sum of its proper divisors (466795).

20070293 is an equidigital number, since it uses as much as digits as its factorization.

20070293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466794.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20070293 is about 4479.9880580198. The cubic root of 20070293 is about 271.7593974193.

Adding to 20070293 its reverse (39207002), we get a palindrome (59277295).

The spelling of 20070293 in words is "twenty million, seventy thousand, two hundred ninety-three".

Divisors: 1 43 466751 20070293