226572987 has 4 divisors (see below), whose sum is σ = 302097320. Its totient is φ = 151048656.

The previous prime is 226572979. The next prime is 226573021. The reversal of 226572987 is 789275622.

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

It is not a de Polignac number, because 226572987 - 2³ = 226572979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226572187) 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, 37762162 + ... + 37762167.

It is an arithmetic number, because the mean of its divisors is an integer number (75524330).

Almost surely, 2^226572987 is an apocalyptic number.

226572987 is a deficient number, since it is larger than the sum of its proper divisors (75524333).

226572987 is an equidigital number, since it uses as much as digits as its factorization.

226572987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75524332.

The product of its digits is 846720, while the sum is 48.

The square root of 226572987 is about 15052.3415786382. The cubic root of 226572987 is about 609.6342759823.

The spelling of 226572987 in words is "two hundred twenty-six million, five hundred seventy-two thousand, nine hundred eighty-seven".