87750222 has 32 divisors (see below), whose sum is σ = 204844032. Its totient is φ = 24537504.

The previous prime is 87750217. The next prime is 87750239. The reversal of 87750222 is 22205778.

It is a super-2 number, since 2×87750222² = 15400202922098568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20253 + ... + 24200.

It is an arithmetic number, because the mean of its divisors is an integer number (6401376).

Almost surely, 2^87750222 is an apocalyptic number.

87750222 is an abundant number, since it is smaller than the sum of its proper divisors (117093810).

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

87750222 is a wasteful number, since it uses less digits than its factorization.

87750222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44512.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 87750222 is about 9367.5088470735. The cubic root of 87750222 is about 444.3747850039.

The spelling of 87750222 in words is "eighty-seven million, seven hundred fifty thousand, two hundred twenty-two".