228810405 has 32 divisors (see below), whose sum is σ = 379603584. Its totient is φ = 117593856.

The previous prime is 228810403. The next prime is 228810409. The reversal of 228810405 is 504018822.

It is not a de Polignac number, because 228810405 - 2¹ = 228810403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228810403) 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, 57459 + ... + 61311.

It is an arithmetic number, because the mean of its divisors is an integer number (11862612).

Almost surely, 2^228810405 is an apocalyptic number.

It is an amenable number.

228810405 is a deficient number, since it is larger than the sum of its proper divisors (150793179).

228810405 is a wasteful number, since it uses less digits than its factorization.

228810405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 228810405 is about 15126.4802581433. The cubic root of 228810405 is about 611.6344280695.

The spelling of 228810405 in words is "two hundred twenty-eight million, eight hundred ten thousand, four hundred five".