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10720838 = 25360419
BaseRepresentation
bin101000111001…
…011001000110
3202011200020002
4220321121012
510221031323
61021441302
7160061042
oct50713106
922150202
1010720838
1160627a7
123710232
1322b49bb
1415d1022
15e1b828
hexa39646

10720838 has 4 divisors (see below), whose sum is σ = 16081260. Its totient is φ = 5360418.

The previous prime is 10720837. The next prime is 10720859. The reversal of 10720838 is 83802701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83802701 = 163514127.

It is a super-2 number, since 2×107208382 = 229872734844488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10720838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10720837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2680208 + ... + 2680211.

It is an arithmetic number, because the mean of its divisors is an integer number (4020315).

Almost surely, 210720838 is an apocalyptic number.

10720838 is a deficient number, since it is larger than the sum of its proper divisors (5360422).

10720838 is an equidigital number, since it uses as much as digits as its factorization.

10720838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360421.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 10720838 is about 3274.2690787411. The cubic root of 10720838 is about 220.5004996192.

The spelling of 10720838 in words is "ten million, seven hundred twenty thousand, eight hundred thirty-eight".

Divisors: 1 2 5360419 10720838