228236694 has 64 divisors (see below), whose sum is σ = 541212672. Its totient is φ = 62791200.

The previous prime is 228236693. The next prime is 228236707. The reversal of 228236694 is 496632822.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228236693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399429 + ... + 399999.

It is an arithmetic number, because the mean of its divisors is an integer number (8456448).

Almost surely, 2^228236694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228236694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270606336).

228236694 is an abundant number, since it is smaller than the sum of its proper divisors (312975978).

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

228236694 is a wasteful number, since it uses less digits than its factorization.

228236694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921.

The product of its digits is 248832, while the sum is 42.

The square root of 228236694 is about 15107.5045589932. The cubic root of 228236694 is about 611.1228034812.

The spelling of 228236694 in words is "two hundred twenty-eight million, two hundred thirty-six thousand, six hundred ninety-four".