1220280510 has 32 divisors (see below), whose sum is σ = 3082815360. Its totient is φ = 308281248.

The previous prime is 1220280487. The next prime is 1220280511. The reversal of 1220280510 is 150820221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220280511) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1069852 + ... + 1070991.

It is an arithmetic number, because the mean of its divisors is an integer number (96337980).

Almost surely, 2^1220280510 is an apocalyptic number.

1220280510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220280510 is an abundant number, since it is smaller than the sum of its proper divisors (1862534850).

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

1220280510 is a wasteful number, since it uses less digits than its factorization.

1220280510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140872.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1220280510 is about 34932.5136513249. The cubic root of 1220280510 is about 1068.6116182104.

The spelling of 1220280510 in words is "one billion, two hundred twenty million, two hundred eighty thousand, five hundred ten".