87920228 has 24 divisors (see below), whose sum is σ = 173638080. Its totient is φ = 38585120.

The previous prime is 87920227. The next prime is 87920249. The reversal of 87920228 is 82202978.

It is a junction number, because it is equal to n+sod(n) for n = 87920191 and 87920200.

It is not an unprimeable number, because it can be changed into a prime (87920227) 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, 33176 + ... + 35727.

It is an arithmetic number, because the mean of its divisors is an integer number (7234920).

Almost surely, 2^87920228 is an apocalyptic number.

It is an amenable number.

87920228 is a deficient number, since it is larger than the sum of its proper divisors (85717852).

87920228 is a wasteful number, since it uses less digits than its factorization.

87920228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68947 (or 68945 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 87920228 is about 9376.5786937454. The cubic root of 87920228 is about 444.6615749513.

The spelling of 87920228 in words is "eighty-seven million, nine hundred twenty thousand, two hundred twenty-eight".