228232740 has 24 divisors (see below), whose sum is σ = 639051840. Its totient is φ = 60862048.

The previous prime is 228232733. The next prime is 228232747. The reversal of 228232740 is 47232822.

It is an interprime number because it is at equal distance from previous prime (228232733) and next prime (228232747).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 228232698 and 228232707.

It is not an unprimeable number, because it can be changed into a prime (228232747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1901880 + ... + 1901999.

It is an arithmetic number, because the mean of its divisors is an integer number (26627160).

Almost surely, 2^228232740 is an apocalyptic number.

228232740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228232740 is an abundant number, since it is smaller than the sum of its proper divisors (410819100).

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

228232740 is a wasteful number, since it uses less digits than its factorization.

228232740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803891 (or 3803889 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 228232740 is about 15107.3736963113. The cubic root of 228232740 is about 611.1192744058.

The spelling of 228232740 in words is "two hundred twenty-eight million, two hundred thirty-two thousand, seven hundred forty".