228145742 has 24 divisors (see below), whose sum is σ = 377256096. Its totient is φ = 103400000.

The previous prime is 228145691. The next prime is 228145751. The reversal of 228145742 is 247541822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95867 + ... + 98217.

It is an arithmetic number, because the mean of its divisors is an integer number (15719004).

Almost surely, 2^228145742 is an apocalyptic number.

228145742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

228145742 is a deficient number, since it is larger than the sum of its proper divisors (149110354).

228145742 is a wasteful number, since it uses less digits than its factorization.

228145742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2765 counting only the distinct ones).

The product of its digits is 35840, while the sum is 35.

The square root of 228145742 is about 15104.4940994394. The cubic root of 228145742 is about 611.0416155047.

The spelling of 228145742 in words is "two hundred twenty-eight million, one hundred forty-five thousand, seven hundred forty-two".