87741220 has 24 divisors (see below), whose sum is σ = 210579264. Its totient is φ = 30082656.

The previous prime is 87741217. The next prime is 87741229. The reversal of 87741220 is 2214778.

It is not an unprimeable number, because it can be changed into a prime (87741229) 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 7 ways as a sum of consecutive naturals, for example, 313222 + ... + 313501.

It is an arithmetic number, because the mean of its divisors is an integer number (8774136).

Almost surely, 2^87741220 is an apocalyptic number.

It is an amenable number.

87741220 is an abundant number, since it is smaller than the sum of its proper divisors (122838044).

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

87741220 is a wasteful number, since it uses less digits than its factorization.

87741220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626739 (or 626737 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 87741220 is about 9367.0283441442. The cubic root of 87741220 is about 444.3595888463.

Adding to 87741220 its reverse (2214778), we get a palindrome (89955998).

The spelling of 87741220 in words is "eighty-seven million, seven hundred forty-one thousand, two hundred twenty".