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11230480 = 245140381
BaseRepresentation
bin101010110101…
…110100010000
3210010120022201
4222311310100
510333333410
61040412544
7164312632
oct52656420
923116281
1011230480
116380698
123917154
132432971
1416c4a52
15ebc83a
hexab5d10

11230480 has 20 divisors (see below), whose sum is σ = 26111052. Its totient is φ = 4492160.

The previous prime is 11230469. The next prime is 11230487. The reversal of 11230480 is 8403211.

It can be written as a sum of positive squares in 2 ways, for example, as 7420176 + 3810304 = 2724^2 + 1952^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×112304802 = 252247362060800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11230487) 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 in 3 ways as a sum of consecutive naturals, for example, 70111 + ... + 70270.

Almost surely, 211230480 is an apocalyptic number.

11230480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11230480 is an abundant number, since it is smaller than the sum of its proper divisors (14880572).

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

11230480 is a wasteful number, since it uses less digits than its factorization.

11230480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140394 (or 140388 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 11230480 is about 3351.1908331219. The cubic root of 11230480 is about 223.9405667151.

Adding to 11230480 its reverse (8403211), we get a palindrome (19633691).

The spelling of 11230480 in words is "eleven million, two hundred thirty thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 140381 280762 561524 701905 1123048 1403810 2246096 2807620 5615240 11230480