228378147 has 8 divisors (see below), whose sum is σ = 314327040. Its totient is φ = 147340680.

The previous prime is 228378133. The next prime is 228378173. The reversal of 228378147 is 741873822.

228378147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 228378147 - 2¹⁶ = 228312611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228378099 and 228378108.

It is not an unprimeable number, because it can be changed into a prime (228378847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227747 + ... + 1227932.

It is an arithmetic number, because the mean of its divisors is an integer number (39290880).

Almost surely, 2^228378147 is an apocalyptic number.

228378147 is a deficient number, since it is larger than the sum of its proper divisors (85948893).

228378147 is a wasteful number, since it uses less digits than its factorization.

228378147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455713.

The product of its digits is 150528, while the sum is 42.

The square root of 228378147 is about 15112.1853813404. The cubic root of 228378147 is about 611.2490281474.

The spelling of 228378147 in words is "two hundred twenty-eight million, three hundred seventy-eight thousand, one hundred forty-seven".