228403719 has 32 divisors (see below), whose sum is σ = 345042880. Its totient is φ = 151165440.

The previous prime is 228403717. The next prime is 228403733. The reversal of 228403719 is 917304822.

228403719 is a `hidden beast` number, since 2 + 284 + 0 + 371 + 9 = 666.

228403719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228403719 - 2¹ = 228403717 is a prime.

It is a super-2 number, since 2×228403719² = 104336517706061922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228403717) 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, 395559 + ... + 396135.

It is an arithmetic number, because the mean of its divisors is an integer number (10782590).

Almost surely, 2^228403719 is an apocalyptic number.

228403719 is a deficient number, since it is larger than the sum of its proper divisors (116639161).

228403719 is an frugal number, since it uses more digits than its factorization.

228403719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 228403719 is about 15113.0314298621. The cubic root of 228403719 is about 611.2718415922.

The spelling of 228403719 in words is "two hundred twenty-eight million, four hundred three thousand, seven hundred nineteen".