283563540 has 72 divisors (see below), whose sum is σ = 926315208. Its totient is φ = 69799680.

The previous prime is 283563529. The next prime is 283563571. The reversal of 283563540 is 45365382.

It is a happy number.

283563540 is a `hidden beast` number, since 28 + 35 + 63 + 540 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27499536 + 256064004 = 5244^2 + 16002^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 283563495 and 283563504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58251 + ... + 62930.

It is an arithmetic number, because the mean of its divisors is an integer number (12865489).

Almost surely, 2^283563540 is an apocalyptic number.

283563540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283563540 is an abundant number, since it is smaller than the sum of its proper divisors (642751668).

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

283563540 is a wasteful number, since it uses less digits than its factorization.

283563540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121209 (or 121204 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 283563540 is about 16839.3449991382. The cubic root of 283563540 is about 656.9769457379.

The spelling of 283563540 in words is "two hundred eighty-three million, five hundred sixty-three thousand, five hundred forty".