2210661520 has 40 divisors (see below), whose sum is σ = 5153420160. Its totient is φ = 881919360.

The previous prime is 2210661469. The next prime is 2210661527. The reversal of 2210661520 is 251660122.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2210661527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6136 + ... + 66775.

It is an arithmetic number, because the mean of its divisors is an integer number (128835504).

Almost surely, 2^2210661520 is an apocalyptic number.

2210661520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2210661520 is an abundant number, since it is smaller than the sum of its proper divisors (2942758640).

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

2210661520 is a wasteful number, since it uses less digits than its factorization.

2210661520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73303 (or 73297 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2210661520 is about 47017.6724221861. The cubic root of 2210661520 is about 1302.6890138960.

The spelling of 2210661520 in words is "two billion, two hundred ten million, six hundred sixty-one thousand, five hundred twenty".