226018778 has 4 divisors (see below), whose sum is σ = 339028170. Its totient is φ = 113009388.

The previous prime is 226018777. The next prime is 226018783. The reversal of 226018778 is 877810622.

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., 224310529 + 1708249 = 14977^2 + 1307^2 .

It is a super-2 number, since 2×226018778² = 102168976017226568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (226018777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56504693 + ... + 56504696.

Almost surely, 2^226018778 is an apocalyptic number.

226018778 is a deficient number, since it is larger than the sum of its proper divisors (113009392).

226018778 is a wasteful number, since it uses less digits than its factorization.

226018778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113009391.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 226018778 is about 15033.9209123901. The cubic root of 226018778 is about 609.1368047111.

The spelling of 226018778 in words is "two hundred twenty-six million, eighteen thousand, seven hundred seventy-eight".