87209282 has 4 divisors (see below), whose sum is σ = 130813926. Its totient is φ = 43604640.

The previous prime is 87209281. The next prime is 87209323. The reversal of 87209282 is 28290278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 86471401 + 737881 = 9299^2 + 859^2 .

It is not an unprimeable number, because it can be changed into a prime (87209281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21802319 + ... + 21802322.

Almost surely, 2^87209282 is an apocalyptic number.

87209282 is a deficient number, since it is larger than the sum of its proper divisors (43604644).

87209282 is a wasteful number, since it uses less digits than its factorization.

87209282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43604643.

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

The square root of 87209282 is about 9338.5910072130. The cubic root of 87209282 is about 443.4597797621.

The spelling of 87209282 in words is "eighty-seven million, two hundred nine thousand, two hundred eighty-two".