228961404 has 96 divisors (see below), whose sum is σ = 686963200. Its totient is φ = 65400048.

The previous prime is 228961399. The next prime is 228961417. The reversal of 228961404 is 404169822.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59367 + ... + 63105.

Almost surely, 2^228961404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228961404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343481600).

228961404 is an abundant number, since it is smaller than the sum of its proper divisors (458001796).

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

228961404 is an equidigital number, since it uses as much as digits as its factorization.

228961404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771 (or 3751 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 228961404 is about 15131.4706489488. The cubic root of 228961404 is about 611.7689439193.

The spelling of 228961404 in words is "two hundred twenty-eight million, nine hundred sixty-one thousand, four hundred four".