228331407 has 8 divisors (see below), whose sum is σ = 307456560. Its totient is φ = 150713600.

The previous prime is 228331381. The next prime is 228331421. The reversal of 228331407 is 704133822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228331407 - 2¹¹ = 228329359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228331457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376482 + ... + 377087.

It is an arithmetic number, because the mean of its divisors is an integer number (38432070).

Almost surely, 2^228331407 is an apocalyptic number.

228331407 is a deficient number, since it is larger than the sum of its proper divisors (79125153).

228331407 is a wasteful number, since it uses less digits than its factorization.

228331407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753673.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 228331407 is about 15110.6388680294. The cubic root of 228331407 is about 611.2073257790.

The spelling of 228331407 in words is "two hundred twenty-eight million, three hundred thirty-one thousand, four hundred seven".