2228640842 has 8 divisors (see below), whose sum is σ = 3346238532. Its totient is φ = 1113228000.

The previous prime is 2228640839. The next prime is 2228640881. The reversal of 2228640842 is 2480468222.

It can be written as a sum of positive squares in 2 ways, for example, as 1982119441 + 246521401 = 44521^2 + 15701^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2228640796 and 2228640805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543659 + ... + 547742.

Almost surely, 2^2228640842 is an apocalyptic number.

2228640842 is a deficient number, since it is larger than the sum of its proper divisors (1117597690).

2228640842 is a wasteful number, since it uses less digits than its factorization.

2228640842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092424.

The product of its (nonzero) digits is 98304, while the sum is 38.

The square root of 2228640842 is about 47208.4827335088. The cubic root of 2228640842 is about 1306.2110750151.

The spelling of 2228640842 in words is "two billion, two hundred twenty-eight million, six hundred forty thousand, eight hundred forty-two".