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10612820 = 225530641
BaseRepresentation
bin101000011111…
…000001010100
3201222012001102
4220133001110
510204102240
61015245232
7156131111
oct50370124
921865042
1010612820
115a99629
123679818
13227779a
1415a3908
15de9815
hexa1f054

10612820 has 12 divisors (see below), whose sum is σ = 22286964. Its totient is φ = 4245120.

The previous prime is 10612801. The next prime is 10612829. The reversal of 10612820 is 2821601.

It can be written as a sum of positive squares in 2 ways, for example, as 5541316 + 5071504 = 2354^2 + 2252^2 .

It is a super-2 number, since 2×106128202 = 225263896704800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 530641 = 10612820 / (1 + 0 + 6 + 1 + 2 + 8 + 2 + 0).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 10612792 and 10612801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10612829) 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, 265301 + ... + 265340.

It is an arithmetic number, because the mean of its divisors is an integer number (1857247).

Almost surely, 210612820 is an apocalyptic number.

10612820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10612820 is an abundant number, since it is smaller than the sum of its proper divisors (11674144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10612820 is a wasteful number, since it uses less digits than its factorization.

10612820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530650 (or 530648 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 10612820 is about 3257.7323401409. The cubic root of 10612820 is about 219.7574461771.

The spelling of 10612820 in words is "ten million, six hundred twelve thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 530641 1061282 2122564 2653205 5306410 10612820