228746493 has 12 divisors (see below), whose sum is σ = 331634368. Its totient is φ = 151933320.

The previous prime is 228746473. The next prime is 228746513. The reversal of 228746493 is 394647822.

228746493 is a `hidden beast` number, since 22 + 87 + 464 + 93 = 666.

It is an interprime number because it is at equal distance from previous prime (228746473) and next prime (228746513).

It is not a de Polignac number, because 228746493 - 2⁶ = 228746429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228746443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44455 + ... + 49332.

Almost surely, 2^228746493 is an apocalyptic number.

It is an amenable number.

228746493 is a deficient number, since it is larger than the sum of its proper divisors (102887875).

228746493 is a wasteful number, since it uses less digits than its factorization.

228746493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94064 (or 94061 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 228746493 is about 15124.3675239661. The cubic root of 228746493 is about 611.5774749198.

The spelling of 228746493 in words is "two hundred twenty-eight million, seven hundred forty-six thousand, four hundred ninety-three".