228390597 has 32 divisors (see below), whose sum is σ = 362741760. Its totient is φ = 143280576.

The previous prime is 228390581. The next prime is 228390601. The reversal of 228390597 is 795093822.

228390597 is a `hidden beast` number, since 2 + 28 + 39 + 0 + 597 = 666.

It is not a de Polignac number, because 228390597 - 2⁴ = 228390581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228390517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34108 + ... + 40250.

It is an arithmetic number, because the mean of its divisors is an integer number (11335680).

Almost surely, 2^228390597 is an apocalyptic number.

228390597 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

228390597 is a deficient number, since it is larger than the sum of its proper divisors (134351163).

228390597 is an frugal number, since it uses more digits than its factorization.

228390597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181 (or 6163 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 228390597 is about 15112.5972949722. The cubic root of 228390597 is about 611.2601353282.

The spelling of 228390597 in words is "two hundred twenty-eight million, three hundred ninety thousand, five hundred ninety-seven".