228023738 has 4 divisors (see below), whose sum is σ = 342035610.
Its totient is φ = 114011868.
The previous prime is 228023729. The next prime is 228023753. The reversal of 228023738 is 837320822.
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., 227919409 + 104329 = 15097^2 + 323^2
It is a junction number, because it is equal to n+sod(n) for n = 228023698 and 228023707.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57005933 + ... + 57005936.
Almost surely, 2228023738 is an apocalyptic number.
228023738 is a deficient number, since it is larger than the sum of its proper divisors (114011872).
228023738 is a wasteful number, since it uses less digits than its factorization.
228023738 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 114011871.
The product of its (nonzero) digits is 32256, while the sum is 35.
The square root of 228023738 is about 15100.4548938103.
The cubic root of 228023738 is about 610.9326751794.
The spelling of 228023738 in words is "two hundred twenty-eight million, twenty-three thousand, seven hundred thirty-eight".