872415226 has 4 divisors (see below), whose sum is σ = 1308622842. Its totient is φ = 436207612.

The previous prime is 872415211. The next prime is 872415239. The reversal of 872415226 is 622514278.

It is a happy number.

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., 535876201 + 336539025 = 23149^2 + 18345^2 .

It is a super-2 number, since 2×872415226² = 1522216653113262152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218103805 + ... + 218103808.

Almost surely, 2^872415226 is an apocalyptic number.

872415226 is a deficient number, since it is larger than the sum of its proper divisors (436207616).

872415226 is a wasteful number, since it uses less digits than its factorization.

872415226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436207615.

The product of its digits is 53760, while the sum is 37.

The square root of 872415226 is about 29536.6759470324. The cubic root of 872415226 is about 955.5228539547.

The spelling of 872415226 in words is "eight hundred seventy-two million, four hundred fifteen thousand, two hundred twenty-six".