228142378 has 4 divisors (see below), whose sum is σ = 342213570. Its totient is φ = 114071188.

The previous prime is 228142337. The next prime is 228142403. The reversal of 228142378 is 873241822.

228142378 is digitally balanced in base 2, 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., 133333209 + 94809169 = 11547^2 + 9737^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57035593 + ... + 57035596.

Almost surely, 2^228142378 is an apocalyptic number.

228142378 is a deficient number, since it is larger than the sum of its proper divisors (114071192).

228142378 is a wasteful number, since it uses less digits than its factorization.

228142378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114071191.

The product of its digits is 43008, while the sum is 37.

The square root of 228142378 is about 15104.3827414430. The cubic root of 228142378 is about 611.0386122284.

The spelling of 228142378 in words is "two hundred twenty-eight million, one hundred forty-two thousand, three hundred seventy-eight".