228190426 has 4 divisors (see below), whose sum is σ = 342285642. Its totient is φ = 114095212.

The previous prime is 228190367. The next prime is 228190427. The reversal of 228190426 is 624091822.

228190426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 137007025 + 91183401 = 11705^2 + 9549^2 .

It is a super-2 number, since 2×228190426² = 104141741036122952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228190391 and 228190400.

It is not an unprimeable number, because it can be changed into a prime (228190427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57047605 + ... + 57047608.

Almost surely, 2^228190426 is an apocalyptic number.

228190426 is a deficient number, since it is larger than the sum of its proper divisors (114095216).

228190426 is a wasteful number, since it uses less digits than its factorization.

228190426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114095215.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 228190426 is about 15105.9731894373. The cubic root of 228190426 is about 611.0815052128.

The spelling of 228190426 in words is "two hundred twenty-eight million, one hundred ninety thousand, four hundred twenty-six".