87222458 has 8 divisors (see below), whose sum is σ = 131252628. Its totient is φ = 43471584.

The previous prime is 87222451. The next prime is 87222467. The reversal of 87222458 is 85422278.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60730849 + 26491609 = 7793^2 + 5147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87222451) 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, 69041 + ... + 70292.

Almost surely, 2^87222458 is an apocalyptic number.

87222458 is a deficient number, since it is larger than the sum of its proper divisors (44030170).

87222458 is a wasteful number, since it uses less digits than its factorization.

87222458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139648.

The product of its digits is 71680, while the sum is 38.

The square root of 87222458 is about 9339.2964403107. The cubic root of 87222458 is about 443.4821119867.

The spelling of 87222458 in words is "eighty-seven million, two hundred twenty-two thousand, four hundred fifty-eight".