87228506 has 16 divisors (see below), whose sum is σ = 139788960. Its totient is φ = 40700880.

The previous prime is 87228497. The next prime is 87228509. The reversal of 87228506 is 60582278.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87228506.

It is not an unprimeable number, because it can be changed into a prime (87228509) 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, 14585 + ... + 19676.

It is an arithmetic number, because the mean of its divisors is an integer number (8736810).

Almost surely, 2^87228506 is an apocalyptic number.

87228506 is a deficient number, since it is larger than the sum of its proper divisors (52560454).

87228506 is a wasteful number, since it uses less digits than its factorization.

87228506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34349.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 87228506 is about 9339.6202278251. The cubic root of 87228506 is about 443.4923620908.

The spelling of 87228506 in words is "eighty-seven million, two hundred twenty-eight thousand, five hundred six".