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10212407 = 37276011
BaseRepresentation
bin100110111101…
…010000110111
3201012211210022
4212331100313
510103244112
61002515355
7152542532
oct46752067
921184708
1010212407
115845807
123505b5b
13216745a
1414dba19
15d6ad72
hex9bd437

10212407 has 4 divisors (see below), whose sum is σ = 10488456. Its totient is φ = 9936360.

The previous prime is 10212373. The next prime is 10212421. The reversal of 10212407 is 70421201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70421201 = 193706379.

It is a cyclic number.

It is not a de Polignac number, because 10212407 - 28 = 10212151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212467) 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, 137969 + ... + 138042.

It is an arithmetic number, because the mean of its divisors is an integer number (2622114).

Almost surely, 210212407 is an apocalyptic number.

10212407 is a deficient number, since it is larger than the sum of its proper divisors (276049).

10212407 is an equidigital number, since it uses as much as digits as its factorization.

10212407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276048.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 10212407 is about 3195.6856854203. The cubic root of 10212407 is about 216.9581845851.

Adding to 10212407 its reverse (70421201), we get a palindrome (80633608).

The spelling of 10212407 in words is "ten million, two hundred twelve thousand, four hundred seven".

Divisors: 1 37 276011 10212407