228135957 has 16 divisors (see below), whose sum is σ = 347863680. Its totient is φ = 130277952.

The previous prime is 228135923. The next prime is 228135959. The reversal of 228135957 is 759531822.

It is a happy number.

It is not a de Polignac number, because 228135957 - 2⁷ = 228135829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228135959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44019 + ... + 48927.

It is an arithmetic number, because the mean of its divisors is an integer number (21741480).

Almost surely, 2^228135957 is an apocalyptic number.

It is an amenable number.

228135957 is a deficient number, since it is larger than the sum of its proper divisors (119727723).

228135957 is a wasteful number, since it uses less digits than its factorization.

228135957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132.

The product of its digits is 151200, while the sum is 42.

The square root of 228135957 is about 15104.1701857467. The cubic root of 228135957 is about 611.0328796740.

The spelling of 228135957 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, nine hundred fifty-seven".