228497957 has 8 divisors (see below), whose sum is σ = 233115096. Its totient is φ = 223921152.

The previous prime is 228497923. The next prime is 228498007. The reversal of 228497957 is 759794822.

It can be written as a sum of positive squares in 4 ways, for example, as 4726276 + 223771681 = 2174^2 + 14959^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 228497957 - 2⁸ = 228497701 is a prime.

It is a super-2 number, since 2×228497957² = 104422632706347698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228497899 and 228497908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228497057) 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, 1493 + ... + 21429.

It is an arithmetic number, because the mean of its divisors is an integer number (29139387).

Almost surely, 2^228497957 is an apocalyptic number.

It is an amenable number.

228497957 is a deficient number, since it is larger than the sum of its proper divisors (4617139).

228497957 is a wasteful number, since it uses less digits than its factorization.

228497957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20167.

The product of its digits is 2540160, while the sum is 53.

The square root of 228497957 is about 15116.1488812462. The cubic root of 228497957 is about 611.3558990605.

The spelling of 228497957 in words is "two hundred twenty-eight million, four hundred ninety-seven thousand, nine hundred fifty-seven".