228137658 has 32 divisors (see below), whose sum is σ = 524206080. Its totient is φ = 64838640.

The previous prime is 228137647. The next prime is 228137659. The reversal of 228137658 is 856731822.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228137659) 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, 6198 + ... + 22241.

It is an arithmetic number, because the mean of its divisors is an integer number (16381440).

Almost surely, 2^228137658 is an apocalyptic number.

228137658 is an abundant number, since it is smaller than the sum of its proper divisors (296068422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228137658 is a wasteful number, since it uses less digits than its factorization.

228137658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28642.

The product of its digits is 161280, while the sum is 42.

The square root of 228137658 is about 15104.2264945942. The cubic root of 228137658 is about 611.0343983070.

The spelling of 228137658 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, six hundred fifty-eight".