228142406 has 4 divisors (see below), whose sum is σ = 342213612. Its totient is φ = 114071202.

The previous prime is 228142403. The next prime is 228142429. The reversal of 228142406 is 604241822.

228142406 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, and also an emirpimes, since its reverse is a distinct semiprime: 604241822 = 2 ⋅302120911.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228142403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57035600 + ... + 57035603.

It is an arithmetic number, because the mean of its divisors is an integer number (85553403).

Almost surely, 2^228142406 is an apocalyptic number.

228142406 is a deficient number, since it is larger than the sum of its proper divisors (114071206).

228142406 is a wasteful number, since it uses less digits than its factorization.

228142406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114071205.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 228142406 is about 15104.3836683262. The cubic root of 228142406 is about 611.0386372260.

The spelling of 228142406 in words is "two hundred twenty-eight million, one hundred forty-two thousand, four hundred six".