228403815 has 32 divisors (see below), whose sum is σ = 381542400. Its totient is φ = 116540160.

The previous prime is 228403801. The next prime is 228403829. The reversal of 228403815 is 518304822.

It is an interprime number because it is at equal distance from previous prime (228403801) and next prime (228403829).

It is not a de Polignac number, because 228403815 - 2⁶ = 228403751 is a prime.

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, 38626 + ... + 44144.

It is an arithmetic number, because the mean of its divisors is an integer number (11923200).

Almost surely, 2^228403815 is an apocalyptic number.

228403815 is a deficient number, since it is larger than the sum of its proper divisors (153138585).

228403815 is a wasteful number, since it uses less digits than its factorization.

228403815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5647.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 228403815 is about 15113.0346059288. The cubic root of 228403815 is about 611.2719272331.

The spelling of 228403815 in words is "two hundred twenty-eight million, four hundred three thousand, eight hundred fifteen".