87093220 has 12 divisors (see below), whose sum is σ = 182895804. Its totient is φ = 34837280.

The previous prime is 87093211. The next prime is 87093221. The reversal of 87093220 is 2239078.

It can be written as a sum of positive squares in 2 ways, for example, as 47251876 + 39841344 = 6874^2 + 6312^2 .

It is not an unprimeable number, because it can be changed into a prime (87093221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2177311 + ... + 2177350.

It is an arithmetic number, because the mean of its divisors is an integer number (15241317).

Almost surely, 2^87093220 is an apocalyptic number.

It is an amenable number.

87093220 is an abundant number, since it is smaller than the sum of its proper divisors (95802584).

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

87093220 is a wasteful number, since it uses less digits than its factorization.

87093220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354670 (or 4354668 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 87093220 is about 9332.3748317350. The cubic root of 87093220 is about 443.2629670796.

The spelling of 87093220 in words is "eighty-seven million, ninety-three thousand, two hundred twenty".