228892090 has 32 divisors (see below), whose sum is σ = 491339520. Its totient is φ = 75064704.

The previous prime is 228892087. The next prime is 228892091. The reversal of 228892090 is 90298822.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (228892091) 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, 69475 + ... + 72694.

It is an arithmetic number, because the mean of its divisors is an integer number (15354360).

Almost surely, 2^228892090 is an apocalyptic number.

228892090 is an abundant number, since it is smaller than the sum of its proper divisors (262447430).

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

228892090 is a wasteful number, since it uses less digits than its factorization.

228892090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142206.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 228892090 is about 15129.1800835339. The cubic root of 228892090 is about 611.7072036266.

The spelling of 228892090 in words is "two hundred twenty-eight million, eight hundred ninety-two thousand, ninety".