1220540510 has 24 divisors (see below), whose sum is σ = 2555663400. Its totient is φ = 418470864.

The previous prime is 1220540507. The next prime is 1220540533. The reversal of 1220540510 is 150450221.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1244960 + ... + 1245939.

It is an arithmetic number, because the mean of its divisors is an integer number (106485975).

Almost surely, 2^1220540510 is an apocalyptic number.

1220540510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220540510 is an abundant number, since it is smaller than the sum of its proper divisors (1335122890).

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

1220540510 is a wasteful number, since it uses less digits than its factorization.

1220540510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490920 (or 2490913 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1220540510 is about 34936.2349144838. The cubic root of 1220540510 is about 1068.6875076714.

Adding to 1220540510 its reverse (150450221), we get a palindrome (1370990731).

The spelling of 1220540510 in words is "one billion, two hundred twenty million, five hundred forty thousand, five hundred ten".